./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/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_3c0da76f-8593-40a9-a5dd-ec2667c84009/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3c0da76f-8593-40a9-a5dd-ec2667c84009/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3c0da76f-8593-40a9-a5dd-ec2667c84009/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3c0da76f-8593-40a9-a5dd-ec2667c84009/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/peterson_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3c0da76f-8593-40a9-a5dd-ec2667c84009/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3c0da76f-8593-40a9-a5dd-ec2667c84009/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 a9bea0c488d2f45d989ec349e22f0d31a29496ef ................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:53:06,947 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 02:53:06,948 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 02:53:06,954 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 02:53:06,954 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 02:53:06,955 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 02:53:06,955 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 02:53:06,956 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 02:53:06,957 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 02:53:06,957 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 02:53:06,958 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 02:53:06,958 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 02:53:06,958 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 02:53:06,959 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 02:53:06,959 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 02:53:06,960 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 02:53:06,960 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 02:53:06,961 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 02:53:06,962 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 02:53:06,963 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 02:53:06,963 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 02:53:06,964 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 02:53:06,965 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 02:53:06,965 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 02:53:06,965 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 02:53:06,966 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 02:53:06,966 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 02:53:06,966 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 02:53:06,967 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 02:53:06,967 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 02:53:06,967 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 02:53:06,968 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 02:53:06,968 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 02:53:06,968 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 02:53:06,968 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 02:53:06,969 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 02:53:06,969 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3c0da76f-8593-40a9-a5dd-ec2667c84009/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 02:53:06,976 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 02:53:06,976 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 02:53:06,977 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 02:53:06,977 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 02:53:06,977 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 02:53:06,977 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 02:53:06,977 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 02:53:06,977 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 02:53:06,977 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 02:53:06,978 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 02:53:06,978 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 02:53:06,978 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 02:53:06,978 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 02:53:06,978 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 02:53:06,978 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 02:53:06,978 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 02:53:06,978 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 02:53:06,979 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 02:53:06,979 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 02:53:06,979 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 02:53:06,979 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 02:53:06,979 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 02:53:06,979 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 02:53:06,979 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 02:53:06,979 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 02:53:06,979 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 02:53:06,979 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 02:53:06,980 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 02:53:06,980 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 02:53:06,980 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 02:53:06,980 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 02:53:06,980 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 02:53:06,980 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 02:53:06,980 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 02:53:06,980 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 02:53:06,980 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 02:53:06,980 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_3c0da76f-8593-40a9-a5dd-ec2667c84009/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 -> a9bea0c488d2f45d989ec349e22f0d31a29496ef [2018-12-03 02:53:06,997 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 02:53:07,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 02:53:07,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 02:53:07,007 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 02:53:07,007 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 02:53:07,008 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3c0da76f-8593-40a9-a5dd-ec2667c84009/bin-2019/utaipan/../../sv-benchmarks/c/pthread-atomic/peterson_true-unreach-call.i [2018-12-03 02:53:07,042 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3c0da76f-8593-40a9-a5dd-ec2667c84009/bin-2019/utaipan/data/379a46fbf/b31ba083c7ff46228c33241ca07f98ac/FLAGce9d24e66 [2018-12-03 02:53:07,440 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 02:53:07,440 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3c0da76f-8593-40a9-a5dd-ec2667c84009/sv-benchmarks/c/pthread-atomic/peterson_true-unreach-call.i [2018-12-03 02:53:07,448 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3c0da76f-8593-40a9-a5dd-ec2667c84009/bin-2019/utaipan/data/379a46fbf/b31ba083c7ff46228c33241ca07f98ac/FLAGce9d24e66 [2018-12-03 02:53:07,805 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3c0da76f-8593-40a9-a5dd-ec2667c84009/bin-2019/utaipan/data/379a46fbf/b31ba083c7ff46228c33241ca07f98ac [2018-12-03 02:53:07,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 02:53:07,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 02:53:07,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 02:53:07,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 02:53:07,822 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 02:53:07,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:53:07" (1/1) ... [2018-12-03 02:53:07,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417514c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:07, skipping insertion in model container [2018-12-03 02:53:07,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:53:07" (1/1) ... [2018-12-03 02:53:07,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 02:53:07,903 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 02:53:08,068 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 02:53:08,075 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 02:53:08,132 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 02:53:08,158 INFO L195 MainTranslator]: Completed translation [2018-12-03 02:53:08,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:08 WrapperNode [2018-12-03 02:53:08,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 02:53:08,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 02:53:08,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 02:53:08,160 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 02:53:08,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:08" (1/1) ... [2018-12-03 02:53:08,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:08" (1/1) ... [2018-12-03 02:53:08,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 02:53:08,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 02:53:08,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 02:53:08,184 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 02:53:08,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:08" (1/1) ... [2018-12-03 02:53:08,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:08" (1/1) ... [2018-12-03 02:53:08,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:08" (1/1) ... [2018-12-03 02:53:08,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:08" (1/1) ... [2018-12-03 02:53:08,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:08" (1/1) ... [2018-12-03 02:53:08,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:08" (1/1) ... [2018-12-03 02:53:08,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:08" (1/1) ... [2018-12-03 02:53:08,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 02:53:08,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 02:53:08,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 02:53:08,200 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 02:53:08,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3c0da76f-8593-40a9-a5dd-ec2667c84009/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 02:53:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 02:53:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 02:53:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2018-12-03 02:53:08,233 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2018-12-03 02:53:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2018-12-03 02:53:08,233 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2018-12-03 02:53:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-03 02:53:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 02:53:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 02:53:08,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 02:53:08,234 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 02:53:08,390 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 02:53:08,390 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-03 02:53:08,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:53:08 BoogieIcfgContainer [2018-12-03 02:53:08,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 02:53:08,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 02:53:08,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 02:53:08,393 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 02:53:08,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 02:53:07" (1/3) ... [2018-12-03 02:53:08,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8d932f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 02:53:08, skipping insertion in model container [2018-12-03 02:53:08,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:53:08" (2/3) ... [2018-12-03 02:53:08,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8d932f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 02:53:08, skipping insertion in model container [2018-12-03 02:53:08,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:53:08" (3/3) ... [2018-12-03 02:53:08,395 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson_true-unreach-call.i [2018-12-03 02:53:08,413 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 02:53:08,413 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 02:53:08,413 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr2_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 02:53:08,413 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr2_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 02:53:08,414 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 02:53:08,414 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 02:53:08,415 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 02:53:08,415 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 02:53:08,415 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 02:53:08,415 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 02:53:08,416 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 02:53:08,416 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 02:53:08,427 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-03 02:53:08,427 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 02:53:08,431 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-03 02:53:08,440 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-03 02:53:08,454 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 02:53:08,454 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 02:53:08,454 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 02:53:08,454 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 02:53:08,454 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 02:53:08,454 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 02:53:08,454 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 02:53:08,455 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 02:53:08,459 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54places, 59 transitions [2018-12-03 02:53:08,487 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 561 states. [2018-12-03 02:53:08,489 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states. [2018-12-03 02:53:08,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-03 02:53:08,497 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:53:08,497 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:53:08,499 INFO L423 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:53:08,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:53:08,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1235087554, now seen corresponding path program 1 times [2018-12-03 02:53:08,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:53:08,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:53:08,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:53:08,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:53:08,538 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:53:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:53:08,584 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 02:53:08,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:53:08,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 02:53:08,586 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:53:08,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 02:53:08,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 02:53:08,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 02:53:08,598 INFO L87 Difference]: Start difference. First operand 561 states. Second operand 2 states. [2018-12-03 02:53:08,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:53:08,617 INFO L93 Difference]: Finished difference Result 561 states and 1390 transitions. [2018-12-03 02:53:08,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 02:53:08,618 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-12-03 02:53:08,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:53:08,628 INFO L225 Difference]: With dead ends: 561 [2018-12-03 02:53:08,628 INFO L226 Difference]: Without dead ends: 480 [2018-12-03 02:53:08,629 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 02:53:08,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-12-03 02:53:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2018-12-03 02:53:08,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2018-12-03 02:53:08,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1204 transitions. [2018-12-03 02:53:08,665 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1204 transitions. Word has length 19 [2018-12-03 02:53:08,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:53:08,666 INFO L480 AbstractCegarLoop]: Abstraction has 480 states and 1204 transitions. [2018-12-03 02:53:08,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 02:53:08,666 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1204 transitions. [2018-12-03 02:53:08,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-03 02:53:08,666 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:53:08,666 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:53:08,667 INFO L423 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:53:08,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:53:08,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1235117345, now seen corresponding path program 1 times [2018-12-03 02:53:08,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:53:08,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:53:08,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:53:08,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:53:08,670 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:53:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:53:08,699 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 02:53:08,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:53:08,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 02:53:08,700 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:53:08,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 02:53:08,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 02:53:08,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 02:53:08,701 INFO L87 Difference]: Start difference. First operand 480 states and 1204 transitions. Second operand 3 states. [2018-12-03 02:53:08,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:53:08,716 INFO L93 Difference]: Finished difference Result 513 states and 1237 transitions. [2018-12-03 02:53:08,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 02:53:08,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-12-03 02:53:08,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:53:08,718 INFO L225 Difference]: With dead ends: 513 [2018-12-03 02:53:08,718 INFO L226 Difference]: Without dead ends: 423 [2018-12-03 02:53:08,719 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 02:53:08,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-12-03 02:53:08,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 378. [2018-12-03 02:53:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2018-12-03 02:53:08,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 922 transitions. [2018-12-03 02:53:08,729 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 922 transitions. Word has length 19 [2018-12-03 02:53:08,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:53:08,729 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 922 transitions. [2018-12-03 02:53:08,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 02:53:08,729 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 922 transitions. [2018-12-03 02:53:08,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-03 02:53:08,729 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:53:08,730 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 02:53:08,730 INFO L423 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:53:08,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:53:08,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1862669806, now seen corresponding path program 1 times [2018-12-03 02:53:08,730 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:53:08,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:53:08,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:53:08,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:53:08,733 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:53:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:53:08,752 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 02:53:08,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:53:08,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 02:53:08,753 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:53:08,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 02:53:08,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 02:53:08,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 02:53:08,753 INFO L87 Difference]: Start difference. First operand 378 states and 922 transitions. Second operand 3 states. [2018-12-03 02:53:08,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:53:08,768 INFO L93 Difference]: Finished difference Result 345 states and 805 transitions. [2018-12-03 02:53:08,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 02:53:08,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-12-03 02:53:08,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:53:08,769 INFO L225 Difference]: With dead ends: 345 [2018-12-03 02:53:08,769 INFO L226 Difference]: Without dead ends: 243 [2018-12-03 02:53:08,769 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 02:53:08,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-12-03 02:53:08,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-12-03 02:53:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-12-03 02:53:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 556 transitions. [2018-12-03 02:53:08,774 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 556 transitions. Word has length 22 [2018-12-03 02:53:08,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:53:08,775 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 556 transitions. [2018-12-03 02:53:08,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 02:53:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 556 transitions. [2018-12-03 02:53:08,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-03 02:53:08,776 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:53:08,776 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 02:53:08,776 INFO L423 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:53:08,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:53:08,776 INFO L82 PathProgramCache]: Analyzing trace with hash 352522995, now seen corresponding path program 1 times [2018-12-03 02:53:08,776 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:53:08,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:53:08,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:53:08,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:53:08,779 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:53:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:53:08,815 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 02:53:08,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:53:08,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 02:53:08,815 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:53:08,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 02:53:08,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 02:53:08,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-03 02:53:08,816 INFO L87 Difference]: Start difference. First operand 243 states and 556 transitions. Second operand 4 states. [2018-12-03 02:53:08,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:53:08,834 INFO L93 Difference]: Finished difference Result 264 states and 607 transitions. [2018-12-03 02:53:08,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 02:53:08,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-03 02:53:08,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:53:08,836 INFO L225 Difference]: With dead ends: 264 [2018-12-03 02:53:08,836 INFO L226 Difference]: Without dead ends: 228 [2018-12-03 02:53:08,836 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 02:53:08,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-12-03 02:53:08,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-12-03 02:53:08,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-12-03 02:53:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 496 transitions. [2018-12-03 02:53:08,841 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 496 transitions. Word has length 27 [2018-12-03 02:53:08,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:53:08,842 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 496 transitions. [2018-12-03 02:53:08,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 02:53:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 496 transitions. [2018-12-03 02:53:08,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-03 02:53:08,843 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:53:08,843 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 02:53:08,843 INFO L423 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 02:53:08,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:53:08,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2145141981, now seen corresponding path program 1 times [2018-12-03 02:53:08,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:53:08,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:53:08,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:53:08,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:53:08,847 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:53:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 02:53:08,876 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 02:53:08,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 02:53:08,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 02:53:08,877 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 02:53:08,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 02:53:08,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 02:53:08,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-03 02:53:08,877 INFO L87 Difference]: Start difference. First operand 228 states and 496 transitions. Second operand 4 states. [2018-12-03 02:53:08,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 02:53:08,887 INFO L93 Difference]: Finished difference Result 105 states and 234 transitions. [2018-12-03 02:53:08,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 02:53:08,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-03 02:53:08,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 02:53:08,887 INFO L225 Difference]: With dead ends: 105 [2018-12-03 02:53:08,887 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 02:53:08,887 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 02:53:08,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 02:53:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 02:53:08,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 02:53:08,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 02:53:08,888 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-12-03 02:53:08,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 02:53:08,888 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 02:53:08,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 02:53:08,888 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 02:53:08,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 02:53:08,890 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-03 02:53:08,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 02:53:08 BasicIcfg [2018-12-03 02:53:08,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 02:53:08,891 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 02:53:08,891 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 02:53:08,892 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 02:53:08,892 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:53:08" (3/4) ... [2018-12-03 02:53:08,894 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-03 02:53:08,898 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2018-12-03 02:53:08,899 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2018-12-03 02:53:08,901 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-12-03 02:53:08,901 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-03 02:53:08,927 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3c0da76f-8593-40a9-a5dd-ec2667c84009/bin-2019/utaipan/witness.graphml [2018-12-03 02:53:08,927 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 02:53:08,928 INFO L168 Benchmark]: Toolchain (without parser) took 1116.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 956.0 MB in the beginning and 990.1 MB in the end (delta: -34.1 MB). Peak memory consumption was 80.2 MB. Max. memory is 11.5 GB. [2018-12-03 02:53:08,929 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 02:53:08,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -142.4 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. [2018-12-03 02:53:08,930 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-03 02:53:08,930 INFO L168 Benchmark]: Boogie Preprocessor took 15.18 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 02:53:08,930 INFO L168 Benchmark]: RCFGBuilder took 191.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-12-03 02:53:08,931 INFO L168 Benchmark]: TraceAbstraction took 500.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 990.1 MB in the end (delta: 83.2 MB). Peak memory consumption was 83.2 MB. Max. memory is 11.5 GB. [2018-12-03 02:53:08,931 INFO L168 Benchmark]: Witness Printer took 35.75 ms. Allocated memory is still 1.1 GB. Free memory is still 990.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 02:53:08,934 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 343.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -142.4 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.18 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 191.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 500.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 990.1 MB in the end (delta: 83.2 MB). Peak memory consumption was 83.2 MB. Max. memory is 11.5 GB. * Witness Printer took 35.75 ms. Allocated memory is still 1.1 GB. Free memory is still 990.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - 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 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 78 locations, 4 error locations. SAFE Result, 0.4s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 261 SDtfs, 100 SDslu, 130 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=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, 5 MinimizatonAttempts, 45 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 3403 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...