./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/16_peterson_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_a30b94a1-f421-4469-90e6-5129bef5c079/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a30b94a1-f421-4469-90e6-5129bef5c079/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a30b94a1-f421-4469-90e6-5129bef5c079/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a30b94a1-f421-4469-90e6-5129bef5c079/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/16_peterson_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a30b94a1-f421-4469-90e6-5129bef5c079/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a30b94a1-f421-4469-90e6-5129bef5c079/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 a6a89f9f46b1412575f1266b3402a81524b5e7b5 ................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 05:55:37,113 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 05:55:37,114 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 05:55:37,120 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 05:55:37,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 05:55:37,121 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 05:55:37,121 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 05:55:37,122 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 05:55:37,123 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 05:55:37,123 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 05:55:37,123 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 05:55:37,123 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 05:55:37,124 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 05:55:37,124 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 05:55:37,125 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 05:55:37,125 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 05:55:37,126 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 05:55:37,126 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 05:55:37,127 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 05:55:37,128 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 05:55:37,128 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 05:55:37,129 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 05:55:37,130 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 05:55:37,130 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 05:55:37,130 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 05:55:37,131 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 05:55:37,131 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 05:55:37,132 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 05:55:37,132 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 05:55:37,132 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 05:55:37,133 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 05:55:37,133 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 05:55:37,133 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 05:55:37,133 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 05:55:37,134 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 05:55:37,134 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 05:55:37,134 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a30b94a1-f421-4469-90e6-5129bef5c079/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 05:55:37,141 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 05:55:37,141 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 05:55:37,142 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 05:55:37,142 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 05:55:37,142 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 05:55:37,142 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 05:55:37,142 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 05:55:37,142 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 05:55:37,143 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 05:55:37,143 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 05:55:37,143 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 05:55:37,143 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 05:55:37,143 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 05:55:37,143 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 05:55:37,143 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 05:55:37,143 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 05:55:37,144 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 05:55:37,144 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 05:55:37,144 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 05:55:37,144 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 05:55:37,144 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 05:55:37,144 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 05:55:37,144 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 05:55:37,144 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 05:55:37,144 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 05:55:37,144 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 05:55:37,144 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 05:55:37,145 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 05:55:37,145 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 05:55:37,145 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 05:55:37,145 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 05:55:37,145 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 05:55:37,145 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 05:55:37,145 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 05:55:37,145 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 05:55:37,145 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 05:55:37,145 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_a30b94a1-f421-4469-90e6-5129bef5c079/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 -> a6a89f9f46b1412575f1266b3402a81524b5e7b5 [2018-12-03 05:55:37,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 05:55:37,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 05:55:37,175 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 05:55:37,176 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 05:55:37,176 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 05:55:37,176 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a30b94a1-f421-4469-90e6-5129bef5c079/bin-2019/utaipan/../../sv-benchmarks/c/pthread-ext/16_peterson_true-unreach-call.i [2018-12-03 05:55:37,213 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a30b94a1-f421-4469-90e6-5129bef5c079/bin-2019/utaipan/data/ab765968d/7b11e412f8f34804806d530c16df04c8/FLAG11de091c1 [2018-12-03 05:55:37,587 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 05:55:37,588 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a30b94a1-f421-4469-90e6-5129bef5c079/sv-benchmarks/c/pthread-ext/16_peterson_true-unreach-call.i [2018-12-03 05:55:37,596 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a30b94a1-f421-4469-90e6-5129bef5c079/bin-2019/utaipan/data/ab765968d/7b11e412f8f34804806d530c16df04c8/FLAG11de091c1 [2018-12-03 05:55:37,953 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a30b94a1-f421-4469-90e6-5129bef5c079/bin-2019/utaipan/data/ab765968d/7b11e412f8f34804806d530c16df04c8 [2018-12-03 05:55:37,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 05:55:37,957 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 05:55:37,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 05:55:37,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 05:55:37,963 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 05:55:37,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:55:37" (1/1) ... [2018-12-03 05:55:37,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fec13c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:55:37, skipping insertion in model container [2018-12-03 05:55:37,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:55:37" (1/1) ... [2018-12-03 05:55:37,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 05:55:37,998 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 05:55:38,166 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 05:55:38,173 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 05:55:38,230 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 05:55:38,259 INFO L195 MainTranslator]: Completed translation [2018-12-03 05:55:38,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:55:38 WrapperNode [2018-12-03 05:55:38,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 05:55:38,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 05:55:38,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 05:55:38,260 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 05:55:38,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:55:38" (1/1) ... [2018-12-03 05:55:38,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:55:38" (1/1) ... [2018-12-03 05:55:38,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 05:55:38,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 05:55:38,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 05:55:38,285 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 05:55:38,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:55:38" (1/1) ... [2018-12-03 05:55:38,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:55:38" (1/1) ... [2018-12-03 05:55:38,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:55:38" (1/1) ... [2018-12-03 05:55:38,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:55:38" (1/1) ... [2018-12-03 05:55:38,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:55:38" (1/1) ... [2018-12-03 05:55:38,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:55:38" (1/1) ... [2018-12-03 05:55:38,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:55:38" (1/1) ... [2018-12-03 05:55:38,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 05:55:38,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 05:55:38,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 05:55:38,300 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 05:55:38,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:55:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a30b94a1-f421-4469-90e6-5129bef5c079/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 [2018-12-03 05:55:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 05:55:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2018-12-03 05:55:38,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2018-12-03 05:55:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-03 05:55:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 05:55:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 05:55:38,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 05:55:38,335 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-03 05:55:38,474 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 05:55:38,474 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-12-03 05:55:38,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:55:38 BoogieIcfgContainer [2018-12-03 05:55:38,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 05:55:38,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 05:55:38,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 05:55:38,477 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 05:55:38,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 05:55:37" (1/3) ... [2018-12-03 05:55:38,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3106b884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:55:38, skipping insertion in model container [2018-12-03 05:55:38,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:55:38" (2/3) ... [2018-12-03 05:55:38,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3106b884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:55:38, skipping insertion in model container [2018-12-03 05:55:38,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:55:38" (3/3) ... [2018-12-03 05:55:38,479 INFO L112 eAbstractionObserver]: Analyzing ICFG 16_peterson_true-unreach-call.i [2018-12-03 05:55:38,496 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 05:55:38,496 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 05:55:38,496 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 05:55:38,496 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 05:55:38,496 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 05:55:38,496 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 05:55:38,500 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-03 05:55:38,500 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 05:55:38,505 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-03 05:55:38,515 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-03 05:55:38,529 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 05:55:38,529 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 05:55:38,529 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 05:55:38,529 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 05:55:38,529 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 05:55:38,530 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 05:55:38,530 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 05:55:38,530 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 05:55:38,534 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45places, 49 transitions [2018-12-03 05:55:38,550 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 275 states. [2018-12-03 05:55:38,552 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states. [2018-12-03 05:55:38,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-03 05:55:38,556 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:55:38,557 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:55:38,558 INFO L423 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 05:55:38,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:55:38,561 INFO L82 PathProgramCache]: Analyzing trace with hash 929769553, now seen corresponding path program 1 times [2018-12-03 05:55:38,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:55:38,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:55:38,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:55:38,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:55:38,596 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:55:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:55:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:55:38,644 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:55:38,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 05:55:38,645 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 05:55:38,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 05:55:38,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 05:55:38,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 05:55:38,657 INFO L87 Difference]: Start difference. First operand 275 states. Second operand 2 states. [2018-12-03 05:55:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:55:38,672 INFO L93 Difference]: Finished difference Result 275 states and 539 transitions. [2018-12-03 05:55:38,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 05:55:38,673 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-12-03 05:55:38,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:55:38,681 INFO L225 Difference]: With dead ends: 275 [2018-12-03 05:55:38,681 INFO L226 Difference]: Without dead ends: 235 [2018-12-03 05:55:38,682 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 [2018-12-03 05:55:38,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-12-03 05:55:38,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-12-03 05:55:38,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-12-03 05:55:38,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 459 transitions. [2018-12-03 05:55:38,711 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 459 transitions. Word has length 18 [2018-12-03 05:55:38,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:55:38,711 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 459 transitions. [2018-12-03 05:55:38,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 05:55:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 459 transitions. [2018-12-03 05:55:38,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-03 05:55:38,711 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:55:38,711 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 05:55:38,712 INFO L423 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 05:55:38,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:55:38,712 INFO L82 PathProgramCache]: Analyzing trace with hash 929799344, now seen corresponding path program 1 times [2018-12-03 05:55:38,712 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:55:38,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:55:38,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:55:38,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:55:38,716 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:55:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:55:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:55:38,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:55:38,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 05:55:38,752 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 05:55:38,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 05:55:38,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 05:55:38,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 05:55:38,753 INFO L87 Difference]: Start difference. First operand 235 states and 459 transitions. Second operand 3 states. [2018-12-03 05:55:38,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:55:38,775 INFO L93 Difference]: Finished difference Result 242 states and 452 transitions. [2018-12-03 05:55:38,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 05:55:38,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-12-03 05:55:38,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:55:38,776 INFO L225 Difference]: With dead ends: 242 [2018-12-03 05:55:38,776 INFO L226 Difference]: Without dead ends: 182 [2018-12-03 05:55:38,776 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 [2018-12-03 05:55:38,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-12-03 05:55:38,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2018-12-03 05:55:38,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-12-03 05:55:38,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 316 transitions. [2018-12-03 05:55:38,782 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 316 transitions. Word has length 18 [2018-12-03 05:55:38,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:55:38,782 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 316 transitions. [2018-12-03 05:55:38,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 05:55:38,782 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 316 transitions. [2018-12-03 05:55:38,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-03 05:55:38,783 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:55:38,783 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] [2018-12-03 05:55:38,783 INFO L423 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 05:55:38,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:55:38,783 INFO L82 PathProgramCache]: Analyzing trace with hash 145549379, now seen corresponding path program 1 times [2018-12-03 05:55:38,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:55:38,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:55:38,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:55:38,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:55:38,786 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:55:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:55:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:55:38,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:55:38,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 05:55:38,803 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 05:55:38,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 05:55:38,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 05:55:38,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 05:55:38,804 INFO L87 Difference]: Start difference. First operand 170 states and 316 transitions. Second operand 3 states. [2018-12-03 05:55:38,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:55:38,816 INFO L93 Difference]: Finished difference Result 158 states and 284 transitions. [2018-12-03 05:55:38,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 05:55:38,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-12-03 05:55:38,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:55:38,817 INFO L225 Difference]: With dead ends: 158 [2018-12-03 05:55:38,817 INFO L226 Difference]: Without dead ends: 118 [2018-12-03 05:55:38,817 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 [2018-12-03 05:55:38,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-12-03 05:55:38,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-12-03 05:55:38,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-12-03 05:55:38,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 205 transitions. [2018-12-03 05:55:38,821 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 205 transitions. Word has length 22 [2018-12-03 05:55:38,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:55:38,821 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 205 transitions. [2018-12-03 05:55:38,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 05:55:38,821 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 205 transitions. [2018-12-03 05:55:38,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-03 05:55:38,822 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:55:38,822 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] [2018-12-03 05:55:38,822 INFO L423 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 05:55:38,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:55:38,822 INFO L82 PathProgramCache]: Analyzing trace with hash 2057995240, now seen corresponding path program 1 times [2018-12-03 05:55:38,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:55:38,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:55:38,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:55:38,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:55:38,824 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:55:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:55:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:55:38,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:55:38,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 05:55:38,848 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 05:55:38,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 05:55:38,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 05:55:38,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-03 05:55:38,849 INFO L87 Difference]: Start difference. First operand 118 states and 205 transitions. Second operand 4 states. [2018-12-03 05:55:38,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:55:38,865 INFO L93 Difference]: Finished difference Result 124 states and 216 transitions. [2018-12-03 05:55:38,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 05:55:38,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-03 05:55:38,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:55:38,866 INFO L225 Difference]: With dead ends: 124 [2018-12-03 05:55:38,866 INFO L226 Difference]: Without dead ends: 100 [2018-12-03 05:55:38,866 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-03 05:55:38,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-12-03 05:55:38,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-12-03 05:55:38,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-12-03 05:55:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 159 transitions. [2018-12-03 05:55:38,869 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 159 transitions. Word has length 27 [2018-12-03 05:55:38,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:55:38,869 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 159 transitions. [2018-12-03 05:55:38,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 05:55:38,870 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 159 transitions. [2018-12-03 05:55:38,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-03 05:55:38,870 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 05:55:38,870 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] [2018-12-03 05:55:38,870 INFO L423 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 05:55:38,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 05:55:38,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1472880406, now seen corresponding path program 2 times [2018-12-03 05:55:38,871 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 05:55:38,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:55:38,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 05:55:38,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 05:55:38,873 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 05:55:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 05:55:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 05:55:38,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 05:55:38,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 05:55:38,892 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 05:55:38,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 05:55:38,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 05:55:38,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-03 05:55:38,893 INFO L87 Difference]: Start difference. First operand 100 states and 159 transitions. Second operand 4 states. [2018-12-03 05:55:38,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 05:55:38,900 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2018-12-03 05:55:38,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 05:55:38,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-03 05:55:38,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 05:55:38,901 INFO L225 Difference]: With dead ends: 47 [2018-12-03 05:55:38,901 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 05:55:38,901 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-03 05:55:38,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 05:55:38,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 05:55:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 05:55:38,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 05:55:38,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-12-03 05:55:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 05:55:38,902 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 05:55:38,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 05:55:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 05:55:38,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 05:55:38,904 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-03 05:55:38,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:55:38 BasicIcfg [2018-12-03 05:55:38,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 05:55:38,905 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 05:55:38,905 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 05:55:38,905 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 05:55:38,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:55:38" (3/4) ... [2018-12-03 05:55:38,908 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-03 05:55:38,912 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2018-12-03 05:55:38,915 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-03 05:55:38,915 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-03 05:55:38,938 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a30b94a1-f421-4469-90e6-5129bef5c079/bin-2019/utaipan/witness.graphml [2018-12-03 05:55:38,939 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 05:55:38,939 INFO L168 Benchmark]: Toolchain (without parser) took 982.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 950.6 MB in the beginning and 1.0 GB in the end (delta: -72.9 MB). Peak memory consumption was 64.0 MB. Max. memory is 11.5 GB. [2018-12-03 05:55:38,940 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 05:55:38,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -166.6 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2018-12-03 05:55:38,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.15 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-12-03 05:55:38,941 INFO L168 Benchmark]: Boogie Preprocessor took 14.45 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. [2018-12-03 05:55:38,941 INFO L168 Benchmark]: RCFGBuilder took 175.16 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: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2018-12-03 05:55:38,941 INFO L168 Benchmark]: TraceAbstraction took 429.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 66.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 11.5 GB. [2018-12-03 05:55:38,942 INFO L168 Benchmark]: Witness Printer took 33.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-12-03 05:55:38,943 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 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 300.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -166.6 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.15 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.45 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 175.16 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: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 429.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 66.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 11.5 GB. * Witness Printer took 33.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 643]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 652]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 643]: 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, 57 locations, 3 error locations. SAFE Result, 0.3s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 235 SDtfs, 89 SDslu, 116 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=275occurred 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, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 3383 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...