./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/dekker_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_681cbcba-f6c5-4cc0-af30-bfe776573ee0/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_681cbcba-f6c5-4cc0-af30-bfe776573ee0/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_681cbcba-f6c5-4cc0-af30-bfe776573ee0/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_681cbcba-f6c5-4cc0-af30-bfe776573ee0/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/dekker_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_681cbcba-f6c5-4cc0-af30-bfe776573ee0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_681cbcba-f6c5-4cc0-af30-bfe776573ee0/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 6acd1b4df42e10450e7d05fa6ddd1043597a40b7 .................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 13:53:56,811 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 13:53:56,813 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 13:53:56,821 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 13:53:56,822 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 13:53:56,822 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 13:53:56,823 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 13:53:56,824 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 13:53:56,825 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 13:53:56,826 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 13:53:56,827 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 13:53:56,827 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 13:53:56,827 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 13:53:56,828 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 13:53:56,829 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 13:53:56,829 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 13:53:56,830 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 13:53:56,831 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 13:53:56,833 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 13:53:56,834 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 13:53:56,834 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 13:53:56,835 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 13:53:56,837 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 13:53:56,837 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 13:53:56,837 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 13:53:56,838 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 13:53:56,839 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 13:53:56,839 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 13:53:56,840 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 13:53:56,841 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 13:53:56,841 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 13:53:56,841 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 13:53:56,841 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 13:53:56,842 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 13:53:56,842 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 13:53:56,843 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 13:53:56,843 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_681cbcba-f6c5-4cc0-af30-bfe776573ee0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 13:53:56,853 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 13:53:56,853 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 13:53:56,854 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 13:53:56,854 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 13:53:56,854 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 13:53:56,854 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 13:53:56,854 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 13:53:56,855 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 13:53:56,855 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 13:53:56,855 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 13:53:56,855 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 13:53:56,855 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 13:53:56,855 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 13:53:56,856 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 13:53:56,856 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 13:53:56,856 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 13:53:56,856 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 13:53:56,856 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 13:53:56,857 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 13:53:56,857 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 13:53:56,857 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 13:53:56,857 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 13:53:56,857 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 13:53:56,857 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 13:53:56,857 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 13:53:56,858 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 13:53:56,858 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 13:53:56,858 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 13:53:56,858 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 13:53:56,858 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:53:56,858 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 13:53:56,859 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 13:53:56,859 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 13:53:56,859 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 13:53:56,859 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 13:53:56,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 13:53:56,859 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 13:53:56,859 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_681cbcba-f6c5-4cc0-af30-bfe776573ee0/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 -> 6acd1b4df42e10450e7d05fa6ddd1043597a40b7 [2018-11-23 13:53:56,883 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 13:53:56,894 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 13:53:56,897 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 13:53:56,898 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 13:53:56,899 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 13:53:56,899 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_681cbcba-f6c5-4cc0-af30-bfe776573ee0/bin-2019/utaipan/../../sv-benchmarks/c/pthread-atomic/dekker_true-unreach-call.i [2018-11-23 13:53:56,941 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_681cbcba-f6c5-4cc0-af30-bfe776573ee0/bin-2019/utaipan/data/1a9ca40e4/1625294f8c184e67b513286671ac43c5/FLAG66e3f4fd2 [2018-11-23 13:53:57,283 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 13:53:57,284 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_681cbcba-f6c5-4cc0-af30-bfe776573ee0/sv-benchmarks/c/pthread-atomic/dekker_true-unreach-call.i [2018-11-23 13:53:57,293 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_681cbcba-f6c5-4cc0-af30-bfe776573ee0/bin-2019/utaipan/data/1a9ca40e4/1625294f8c184e67b513286671ac43c5/FLAG66e3f4fd2 [2018-11-23 13:53:57,302 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_681cbcba-f6c5-4cc0-af30-bfe776573ee0/bin-2019/utaipan/data/1a9ca40e4/1625294f8c184e67b513286671ac43c5 [2018-11-23 13:53:57,305 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 13:53:57,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 13:53:57,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 13:53:57,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 13:53:57,310 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 13:53:57,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:53:57" (1/1) ... [2018-11-23 13:53:57,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b4801e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:57, skipping insertion in model container [2018-11-23 13:53:57,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:53:57" (1/1) ... [2018-11-23 13:53:57,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 13:53:57,348 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 13:53:57,558 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:53:57,565 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 13:53:57,644 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:53:57,677 INFO L195 MainTranslator]: Completed translation [2018-11-23 13:53:57,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:57 WrapperNode [2018-11-23 13:53:57,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 13:53:57,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 13:53:57,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 13:53:57,678 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 13:53:57,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:57" (1/1) ... [2018-11-23 13:53:57,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:57" (1/1) ... [2018-11-23 13:53:57,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 13:53:57,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 13:53:57,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 13:53:57,705 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 13:53:57,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:57" (1/1) ... [2018-11-23 13:53:57,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:57" (1/1) ... [2018-11-23 13:53:57,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:57" (1/1) ... [2018-11-23 13:53:57,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:57" (1/1) ... [2018-11-23 13:53:57,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:57" (1/1) ... [2018-11-23 13:53:57,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:57" (1/1) ... [2018-11-23 13:53:57,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:57" (1/1) ... [2018-11-23 13:53:57,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 13:53:57,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 13:53:57,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 13:53:57,720 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 13:53:57,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_681cbcba-f6c5-4cc0-af30-bfe776573ee0/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 [2018-11-23 13:53:57,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 13:53:57,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 13:53:57,754 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2018-11-23 13:53:57,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2018-11-23 13:53:57,754 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2018-11-23 13:53:57,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2018-11-23 13:53:57,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 13:53:57,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 13:53:57,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 13:53:57,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 13:53:57,755 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-23 13:53:57,964 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 13:53:57,964 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-11-23 13:53:57,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:57 BoogieIcfgContainer [2018-11-23 13:53:57,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 13:53:57,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 13:53:57,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 13:53:57,967 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 13:53:57,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:53:57" (1/3) ... [2018-11-23 13:53:57,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb016e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:53:57, skipping insertion in model container [2018-11-23 13:53:57,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:57" (2/3) ... [2018-11-23 13:53:57,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb016e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:53:57, skipping insertion in model container [2018-11-23 13:53:57,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:57" (3/3) ... [2018-11-23 13:53:57,969 INFO L112 eAbstractionObserver]: Analyzing ICFG dekker_true-unreach-call.i [2018-11-23 13:53:57,989 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:53:57,989 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:53:57,989 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:53:57,989 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr2_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:53:57,990 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:53:57,990 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:53:57,991 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:53:57,991 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:53:57,991 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:53:57,991 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:53:57,992 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:53:57,992 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:53:58,002 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-23 13:53:58,002 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 13:53:58,007 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-23 13:53:58,017 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-23 13:53:58,033 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 13:53:58,033 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 13:53:58,034 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 13:53:58,034 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 13:53:58,034 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 13:53:58,034 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 13:53:58,034 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 13:53:58,034 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 13:53:58,040 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63places, 74 transitions [2018-11-23 13:53:58,075 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 934 states. [2018-11-23 13:53:58,077 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states. [2018-11-23 13:53:58,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 13:53:58,084 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:53:58,084 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:53:58,086 INFO L423 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:53:58,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:53:58,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1525123433, now seen corresponding path program 1 times [2018-11-23 13:53:58,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:53:58,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:53:58,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:53:58,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:53:58,126 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:53:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:53:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:53:58,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:53:58,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 13:53:58,196 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:53:58,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 13:53:58,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 13:53:58,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 13:53:58,210 INFO L87 Difference]: Start difference. First operand 934 states. Second operand 3 states. [2018-11-23 13:53:58,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:53:58,269 INFO L93 Difference]: Finished difference Result 1075 states and 2820 transitions. [2018-11-23 13:53:58,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 13:53:58,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-23 13:53:58,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:53:58,284 INFO L225 Difference]: With dead ends: 1075 [2018-11-23 13:53:58,284 INFO L226 Difference]: Without dead ends: 685 [2018-11-23 13:53:58,286 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 [2018-11-23 13:53:58,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2018-11-23 13:53:58,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 631. [2018-11-23 13:53:58,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2018-11-23 13:53:58,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1740 transitions. [2018-11-23 13:53:58,342 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1740 transitions. Word has length 19 [2018-11-23 13:53:58,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:53:58,343 INFO L480 AbstractCegarLoop]: Abstraction has 631 states and 1740 transitions. [2018-11-23 13:53:58,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 13:53:58,343 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1740 transitions. [2018-11-23 13:53:58,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 13:53:58,344 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:53:58,344 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] [2018-11-23 13:53:58,344 INFO L423 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:53:58,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:53:58,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1156667429, now seen corresponding path program 1 times [2018-11-23 13:53:58,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:53:58,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:53:58,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:53:58,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:53:58,349 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:53:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:53:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:53:58,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:53:58,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 13:53:58,390 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:53:58,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 13:53:58,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 13:53:58,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 13:53:58,392 INFO L87 Difference]: Start difference. First operand 631 states and 1740 transitions. Second operand 3 states. [2018-11-23 13:53:58,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:53:58,412 INFO L93 Difference]: Finished difference Result 583 states and 1568 transitions. [2018-11-23 13:53:58,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 13:53:58,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-11-23 13:53:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:53:58,415 INFO L225 Difference]: With dead ends: 583 [2018-11-23 13:53:58,415 INFO L226 Difference]: Without dead ends: 406 [2018-11-23 13:53:58,415 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 [2018-11-23 13:53:58,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-11-23 13:53:58,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2018-11-23 13:53:58,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2018-11-23 13:53:58,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 1091 transitions. [2018-11-23 13:53:58,430 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 1091 transitions. Word has length 22 [2018-11-23 13:53:58,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:53:58,431 INFO L480 AbstractCegarLoop]: Abstraction has 406 states and 1091 transitions. [2018-11-23 13:53:58,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 13:53:58,432 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 1091 transitions. [2018-11-23 13:53:58,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-23 13:53:58,434 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:53:58,434 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] [2018-11-23 13:53:58,435 INFO L423 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:53:58,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:53:58,435 INFO L82 PathProgramCache]: Analyzing trace with hash 196783262, now seen corresponding path program 1 times [2018-11-23 13:53:58,435 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:53:58,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:53:58,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:53:58,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:53:58,439 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:53:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:53:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:53:58,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:53:58,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 13:53:58,479 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:53:58,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 13:53:58,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 13:53:58,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 13:53:58,480 INFO L87 Difference]: Start difference. First operand 406 states and 1091 transitions. Second operand 3 states. [2018-11-23 13:53:58,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:53:58,497 INFO L93 Difference]: Finished difference Result 406 states and 1076 transitions. [2018-11-23 13:53:58,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 13:53:58,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-11-23 13:53:58,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:53:58,499 INFO L225 Difference]: With dead ends: 406 [2018-11-23 13:53:58,499 INFO L226 Difference]: Without dead ends: 364 [2018-11-23 13:53:58,500 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 [2018-11-23 13:53:58,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-11-23 13:53:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2018-11-23 13:53:58,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-11-23 13:53:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 952 transitions. [2018-11-23 13:53:58,510 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 952 transitions. Word has length 26 [2018-11-23 13:53:58,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:53:58,510 INFO L480 AbstractCegarLoop]: Abstraction has 364 states and 952 transitions. [2018-11-23 13:53:58,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 13:53:58,511 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 952 transitions. [2018-11-23 13:53:58,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-23 13:53:58,512 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:53:58,512 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] [2018-11-23 13:53:58,513 INFO L423 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:53:58,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:53:58,513 INFO L82 PathProgramCache]: Analyzing trace with hash 404774520, now seen corresponding path program 1 times [2018-11-23 13:53:58,513 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:53:58,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:53:58,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:53:58,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:53:58,517 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:53:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:53:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:53:58,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:53:58,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 13:53:58,550 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:53:58,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 13:53:58,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 13:53:58,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 13:53:58,551 INFO L87 Difference]: Start difference. First operand 364 states and 952 transitions. Second operand 3 states. [2018-11-23 13:53:58,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:53:58,559 INFO L93 Difference]: Finished difference Result 229 states and 664 transitions. [2018-11-23 13:53:58,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 13:53:58,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-11-23 13:53:58,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:53:58,560 INFO L225 Difference]: With dead ends: 229 [2018-11-23 13:53:58,560 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 13:53:58,560 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 [2018-11-23 13:53:58,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 13:53:58,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 13:53:58,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 13:53:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 13:53:58,561 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-11-23 13:53:58,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:53:58,561 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 13:53:58,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 13:53:58,561 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 13:53:58,561 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 13:53:58,564 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-11-23 13:53:58,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:53:58 BasicIcfg [2018-11-23 13:53:58,567 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 13:53:58,567 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 13:53:58,567 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 13:53:58,567 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 13:53:58,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:57" (3/4) ... [2018-11-23 13:53:58,571 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 13:53:58,577 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2018-11-23 13:53:58,577 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2018-11-23 13:53:58,580 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-23 13:53:58,580 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 13:53:58,609 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_681cbcba-f6c5-4cc0-af30-bfe776573ee0/bin-2019/utaipan/witness.graphml [2018-11-23 13:53:58,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 13:53:58,610 INFO L168 Benchmark]: Toolchain (without parser) took 1304.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 957.0 MB in the beginning and 1.0 GB in the end (delta: -66.3 MB). Peak memory consumption was 81.0 MB. Max. memory is 11.5 GB. [2018-11-23 13:53:58,610 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:53:58,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 957.0 MB in the beginning and 1.1 GB in the end (delta: -166.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. [2018-11-23 13:53:58,611 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:53:58,611 INFO L168 Benchmark]: Boogie Preprocessor took 14.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:53:58,611 INFO L168 Benchmark]: RCFGBuilder took 244.16 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. [2018-11-23 13:53:58,611 INFO L168 Benchmark]: TraceAbstraction took 601.72 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: 70.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 11.5 GB. [2018-11-23 13:53:58,612 INFO L168 Benchmark]: Witness Printer took 42.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:53:58,614 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 371.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 957.0 MB in the beginning and 1.1 GB in the end (delta: -166.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.90 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 244.16 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 601.72 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: 70.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 11.5 GB. * Witness Printer took 42.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 664]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 649]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 664]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 649]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 95 locations, 4 error locations. SAFE Result, 0.5s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 273 SDtfs, 127 SDslu, 150 SDs, 0 SdLazy, 24 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=934occurred 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, 4 MinimizatonAttempts, 54 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 2543 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...