./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_pso.opt_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_4db2da1f-faab-46da-bfb3-1d7fd9b09fa6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4db2da1f-faab-46da-bfb3-1d7fd9b09fa6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4db2da1f-faab-46da-bfb3-1d7fd9b09fa6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4db2da1f-faab-46da-bfb3-1d7fd9b09fa6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_pso.opt_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_4db2da1f-faab-46da-bfb3-1d7fd9b09fa6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4db2da1f-faab-46da-bfb3-1d7fd9b09fa6/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 f774b2dfbefc961514087025cd3c3cd769a7bdaf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 06:01:53,482 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 06:01:53,483 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 06:01:53,490 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 06:01:53,490 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 06:01:53,490 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 06:01:53,491 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 06:01:53,492 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 06:01:53,493 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 06:01:53,493 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 06:01:53,494 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 06:01:53,494 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 06:01:53,494 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 06:01:53,495 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 06:01:53,495 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 06:01:53,496 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 06:01:53,496 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 06:01:53,497 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 06:01:53,498 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 06:01:53,499 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 06:01:53,499 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 06:01:53,500 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 06:01:53,501 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 06:01:53,501 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 06:01:53,501 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 06:01:53,502 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 06:01:53,502 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 06:01:53,503 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 06:01:53,503 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 06:01:53,504 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 06:01:53,504 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 06:01:53,504 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 06:01:53,504 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 06:01:53,504 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 06:01:53,505 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 06:01:53,505 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 06:01:53,505 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4db2da1f-faab-46da-bfb3-1d7fd9b09fa6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 06:01:53,512 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 06:01:53,512 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 06:01:53,513 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 06:01:53,513 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 06:01:53,513 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 06:01:53,513 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 06:01:53,513 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 06:01:53,513 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 06:01:53,514 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 06:01:53,514 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 06:01:53,514 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 06:01:53,514 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 06:01:53,514 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 06:01:53,514 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 06:01:53,514 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 06:01:53,514 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 06:01:53,515 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 06:01:53,515 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 06:01:53,515 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 06:01:53,515 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 06:01:53,515 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 06:01:53,515 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 06:01:53,515 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 06:01:53,515 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 06:01:53,515 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 06:01:53,515 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 06:01:53,516 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 06:01:53,516 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 06:01:53,516 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 06:01:53,516 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 06:01:53,516 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 06:01:53,516 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 06:01:53,516 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 06:01:53,516 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 06:01:53,516 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 06:01:53,516 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 06:01:53,516 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_4db2da1f-faab-46da-bfb3-1d7fd9b09fa6/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 -> f774b2dfbefc961514087025cd3c3cd769a7bdaf [2018-12-02 06:01:53,534 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 06:01:53,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 06:01:53,543 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 06:01:53,544 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 06:01:53,544 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 06:01:53,544 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4db2da1f-faab-46da-bfb3-1d7fd9b09fa6/bin-2019/utaipan/../../sv-benchmarks/c/pthread-wmm/safe027_pso.opt_true-unreach-call.i [2018-12-02 06:01:53,583 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4db2da1f-faab-46da-bfb3-1d7fd9b09fa6/bin-2019/utaipan/data/edbb96524/efa21e65864741d2affaeaf1a64729e9/FLAG2a8a25ccf [2018-12-02 06:01:54,033 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 06:01:54,034 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4db2da1f-faab-46da-bfb3-1d7fd9b09fa6/sv-benchmarks/c/pthread-wmm/safe027_pso.opt_true-unreach-call.i [2018-12-02 06:01:54,040 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4db2da1f-faab-46da-bfb3-1d7fd9b09fa6/bin-2019/utaipan/data/edbb96524/efa21e65864741d2affaeaf1a64729e9/FLAG2a8a25ccf [2018-12-02 06:01:54,048 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4db2da1f-faab-46da-bfb3-1d7fd9b09fa6/bin-2019/utaipan/data/edbb96524/efa21e65864741d2affaeaf1a64729e9 [2018-12-02 06:01:54,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 06:01:54,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 06:01:54,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 06:01:54,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 06:01:54,053 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 06:01:54,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:01:54" (1/1) ... [2018-12-02 06:01:54,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3629c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:01:54, skipping insertion in model container [2018-12-02 06:01:54,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:01:54" (1/1) ... [2018-12-02 06:01:54,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 06:01:54,079 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 06:01:54,241 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:01:54,249 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 06:01:54,320 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:01:54,356 INFO L195 MainTranslator]: Completed translation [2018-12-02 06:01:54,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:01:54 WrapperNode [2018-12-02 06:01:54,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 06:01:54,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 06:01:54,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 06:01:54,357 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 06:01:54,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:01:54" (1/1) ... [2018-12-02 06:01:54,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:01:54" (1/1) ... [2018-12-02 06:01:54,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 06:01:54,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 06:01:54,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 06:01:54,390 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 06:01:54,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:01:54" (1/1) ... [2018-12-02 06:01:54,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:01:54" (1/1) ... [2018-12-02 06:01:54,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:01:54" (1/1) ... [2018-12-02 06:01:54,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:01:54" (1/1) ... [2018-12-02 06:01:54,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:01:54" (1/1) ... [2018-12-02 06:01:54,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:01:54" (1/1) ... [2018-12-02 06:01:54,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:01:54" (1/1) ... [2018-12-02 06:01:54,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 06:01:54,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 06:01:54,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 06:01:54,412 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 06:01:54,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:01:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4db2da1f-faab-46da-bfb3-1d7fd9b09fa6/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 06:01:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 06:01:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 06:01:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-12-02 06:01:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 06:01:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2018-12-02 06:01:54,465 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2018-12-02 06:01:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2018-12-02 06:01:54,465 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2018-12-02 06:01:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2018-12-02 06:01:54,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2018-12-02 06:01:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2018-12-02 06:01:54,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2018-12-02 06:01:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-12-02 06:01:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 06:01:54,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 06:01:54,467 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-02 06:01:54,649 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 06:01:54,649 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-02 06:01:54,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:01:54 BoogieIcfgContainer [2018-12-02 06:01:54,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 06:01:54,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 06:01:54,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 06:01:54,652 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 06:01:54,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:01:54" (1/3) ... [2018-12-02 06:01:54,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dca64ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:01:54, skipping insertion in model container [2018-12-02 06:01:54,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:01:54" (2/3) ... [2018-12-02 06:01:54,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dca64ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:01:54, skipping insertion in model container [2018-12-02 06:01:54,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:01:54" (3/3) ... [2018-12-02 06:01:54,654 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_pso.opt_true-unreach-call.i [2018-12-02 06:01:54,675 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,675 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,676 WARN L317 ript$VariableManager]: TermVariabe Thread0_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,676 WARN L317 ript$VariableManager]: TermVariabe Thread0_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,676 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,676 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,676 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,676 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,676 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,677 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,677 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,677 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,677 WARN L317 ript$VariableManager]: TermVariabe Thread1_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,677 WARN L317 ript$VariableManager]: TermVariabe Thread1_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,677 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,677 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,678 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,678 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,678 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,678 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,678 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,678 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,678 WARN L317 ript$VariableManager]: TermVariabe Thread2_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,679 WARN L317 ript$VariableManager]: TermVariabe Thread2_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,679 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,679 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,679 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,679 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,679 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,679 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,680 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,680 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,680 WARN L317 ript$VariableManager]: TermVariabe Thread3_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,680 WARN L317 ript$VariableManager]: TermVariabe Thread3_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,680 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,680 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,680 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,680 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,681 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,681 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 06:01:54,688 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-02 06:01:54,688 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 06:01:54,693 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 06:01:54,703 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 06:01:54,718 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 06:01:54,718 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 06:01:54,719 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 06:01:54,719 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 06:01:54,719 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 06:01:54,719 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 06:01:54,719 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 06:01:54,719 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 06:01:54,725 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68places, 64 transitions [2018-12-02 06:01:55,335 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13136 states. [2018-12-02 06:01:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 13136 states. [2018-12-02 06:01:55,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-02 06:01:55,354 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:01:55,354 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:01:55,356 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:01:55,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:01:55,360 INFO L82 PathProgramCache]: Analyzing trace with hash -791038270, now seen corresponding path program 1 times [2018-12-02 06:01:55,361 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 06:01:55,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:55,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:01:55,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:55,398 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 06:01:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:01:55,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:01:55,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:01:55,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 06:01:55,509 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 06:01:55,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 06:01:55,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 06:01:55,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 06:01:55,522 INFO L87 Difference]: Start difference. First operand 13136 states. Second operand 4 states. [2018-12-02 06:01:55,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:01:55,672 INFO L93 Difference]: Finished difference Result 13742 states and 55793 transitions. [2018-12-02 06:01:55,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 06:01:55,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-12-02 06:01:55,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:01:55,706 INFO L225 Difference]: With dead ends: 13742 [2018-12-02 06:01:55,707 INFO L226 Difference]: Without dead ends: 5629 [2018-12-02 06:01:55,708 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 06:01:55,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5629 states. [2018-12-02 06:01:55,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5629 to 5629. [2018-12-02 06:01:55,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5629 states. [2018-12-02 06:01:55,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5629 states to 5629 states and 22352 transitions. [2018-12-02 06:01:55,915 INFO L78 Accepts]: Start accepts. Automaton has 5629 states and 22352 transitions. Word has length 35 [2018-12-02 06:01:55,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:01:55,916 INFO L480 AbstractCegarLoop]: Abstraction has 5629 states and 22352 transitions. [2018-12-02 06:01:55,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 06:01:55,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5629 states and 22352 transitions. [2018-12-02 06:01:55,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-02 06:01:55,919 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:01:55,920 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:01:55,920 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:01:55,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:01:55,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1324297606, now seen corresponding path program 1 times [2018-12-02 06:01:55,920 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 06:01:55,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:55,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:01:55,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:55,925 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 06:01:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:01:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:01:55,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:01:55,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 06:01:55,990 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 06:01:55,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 06:01:55,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 06:01:55,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 06:01:55,992 INFO L87 Difference]: Start difference. First operand 5629 states and 22352 transitions. Second operand 5 states. [2018-12-02 06:01:56,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:01:56,077 INFO L93 Difference]: Finished difference Result 6141 states and 23832 transitions. [2018-12-02 06:01:56,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 06:01:56,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-12-02 06:01:56,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:01:56,095 INFO L225 Difference]: With dead ends: 6141 [2018-12-02 06:01:56,096 INFO L226 Difference]: Without dead ends: 5517 [2018-12-02 06:01:56,096 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-12-02 06:01:56,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2018-12-02 06:01:56,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5517. [2018-12-02 06:01:56,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5517 states. [2018-12-02 06:01:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 21820 transitions. [2018-12-02 06:01:56,195 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 21820 transitions. Word has length 36 [2018-12-02 06:01:56,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:01:56,195 INFO L480 AbstractCegarLoop]: Abstraction has 5517 states and 21820 transitions. [2018-12-02 06:01:56,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 06:01:56,196 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 21820 transitions. [2018-12-02 06:01:56,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 06:01:56,200 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:01:56,200 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:01:56,200 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:01:56,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:01:56,200 INFO L82 PathProgramCache]: Analyzing trace with hash -999628882, now seen corresponding path program 1 times [2018-12-02 06:01:56,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 06:01:56,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:56,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:01:56,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:56,202 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 06:01:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:01:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:01:56,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:01:56,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 06:01:56,251 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 06:01:56,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 06:01:56,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 06:01:56,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-02 06:01:56,252 INFO L87 Difference]: Start difference. First operand 5517 states and 21820 transitions. Second operand 6 states. [2018-12-02 06:01:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:01:56,317 INFO L93 Difference]: Finished difference Result 5453 states and 20828 transitions. [2018-12-02 06:01:56,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 06:01:56,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2018-12-02 06:01:56,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:01:56,335 INFO L225 Difference]: With dead ends: 5453 [2018-12-02 06:01:56,335 INFO L226 Difference]: Without dead ends: 4845 [2018-12-02 06:01:56,335 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-12-02 06:01:56,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2018-12-02 06:01:56,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 4845. [2018-12-02 06:01:56,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4845 states. [2018-12-02 06:01:56,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 18796 transitions. [2018-12-02 06:01:56,405 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 18796 transitions. Word has length 37 [2018-12-02 06:01:56,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:01:56,405 INFO L480 AbstractCegarLoop]: Abstraction has 4845 states and 18796 transitions. [2018-12-02 06:01:56,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 06:01:56,406 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 18796 transitions. [2018-12-02 06:01:56,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-02 06:01:56,409 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:01:56,409 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:01:56,409 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:01:56,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:01:56,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1893784710, now seen corresponding path program 1 times [2018-12-02 06:01:56,410 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 06:01:56,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:56,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:01:56,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:56,411 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 06:01:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:01:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:01:56,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:01:56,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 06:01:56,454 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 06:01:56,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 06:01:56,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 06:01:56,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-02 06:01:56,455 INFO L87 Difference]: Start difference. First operand 4845 states and 18796 transitions. Second operand 7 states. [2018-12-02 06:01:56,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:01:56,523 INFO L93 Difference]: Finished difference Result 3565 states and 13036 transitions. [2018-12-02 06:01:56,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 06:01:56,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-12-02 06:01:56,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:01:56,534 INFO L225 Difference]: With dead ends: 3565 [2018-12-02 06:01:56,534 INFO L226 Difference]: Without dead ends: 3053 [2018-12-02 06:01:56,535 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-12-02 06:01:56,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2018-12-02 06:01:56,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 3053. [2018-12-02 06:01:56,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3053 states. [2018-12-02 06:01:56,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 11180 transitions. [2018-12-02 06:01:56,598 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 11180 transitions. Word has length 38 [2018-12-02 06:01:56,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:01:56,598 INFO L480 AbstractCegarLoop]: Abstraction has 3053 states and 11180 transitions. [2018-12-02 06:01:56,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 06:01:56,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 11180 transitions. [2018-12-02 06:01:56,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-02 06:01:56,602 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:01:56,602 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:01:56,602 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:01:56,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:01:56,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1572457708, now seen corresponding path program 1 times [2018-12-02 06:01:56,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 06:01:56,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:56,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:01:56,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:56,605 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 06:01:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:01:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:01:56,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:01:56,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 06:01:56,717 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 06:01:56,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 06:01:56,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 06:01:56,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 06:01:56,718 INFO L87 Difference]: Start difference. First operand 3053 states and 11180 transitions. Second operand 7 states. [2018-12-02 06:01:56,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:01:56,809 INFO L93 Difference]: Finished difference Result 4733 states and 17540 transitions. [2018-12-02 06:01:56,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 06:01:56,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-12-02 06:01:56,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:01:56,816 INFO L225 Difference]: With dead ends: 4733 [2018-12-02 06:01:56,816 INFO L226 Difference]: Without dead ends: 2457 [2018-12-02 06:01:56,817 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-12-02 06:01:56,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2018-12-02 06:01:56,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2457. [2018-12-02 06:01:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2457 states. [2018-12-02 06:01:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 9124 transitions. [2018-12-02 06:01:56,863 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 9124 transitions. Word has length 39 [2018-12-02 06:01:56,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:01:56,863 INFO L480 AbstractCegarLoop]: Abstraction has 2457 states and 9124 transitions. [2018-12-02 06:01:56,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 06:01:56,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 9124 transitions. [2018-12-02 06:01:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-02 06:01:56,865 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:01:56,866 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:01:56,866 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:01:56,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:01:56,866 INFO L82 PathProgramCache]: Analyzing trace with hash 540968834, now seen corresponding path program 2 times [2018-12-02 06:01:56,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 06:01:56,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:56,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:01:56,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:56,869 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 06:01:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:01:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:01:56,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:01:56,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 06:01:56,949 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 06:01:56,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 06:01:56,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 06:01:56,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 06:01:56,950 INFO L87 Difference]: Start difference. First operand 2457 states and 9124 transitions. Second operand 7 states. [2018-12-02 06:01:57,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:01:57,037 INFO L93 Difference]: Finished difference Result 4057 states and 15220 transitions. [2018-12-02 06:01:57,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 06:01:57,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-12-02 06:01:57,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:01:57,042 INFO L225 Difference]: With dead ends: 4057 [2018-12-02 06:01:57,042 INFO L226 Difference]: Without dead ends: 2261 [2018-12-02 06:01:57,042 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-12-02 06:01:57,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2018-12-02 06:01:57,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2261. [2018-12-02 06:01:57,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2261 states. [2018-12-02 06:01:57,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 8528 transitions. [2018-12-02 06:01:57,067 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 8528 transitions. Word has length 39 [2018-12-02 06:01:57,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:01:57,067 INFO L480 AbstractCegarLoop]: Abstraction has 2261 states and 8528 transitions. [2018-12-02 06:01:57,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 06:01:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 8528 transitions. [2018-12-02 06:01:57,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-02 06:01:57,069 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:01:57,069 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:01:57,069 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:01:57,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:01:57,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1549190684, now seen corresponding path program 3 times [2018-12-02 06:01:57,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 06:01:57,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:57,070 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 06:01:57,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:57,071 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 06:01:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:01:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:01:57,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:01:57,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 06:01:57,135 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 06:01:57,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 06:01:57,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 06:01:57,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 06:01:57,135 INFO L87 Difference]: Start difference. First operand 2261 states and 8528 transitions. Second operand 7 states. [2018-12-02 06:01:57,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:01:57,192 INFO L93 Difference]: Finished difference Result 3797 states and 14416 transitions. [2018-12-02 06:01:57,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 06:01:57,192 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-12-02 06:01:57,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:01:57,197 INFO L225 Difference]: With dead ends: 3797 [2018-12-02 06:01:57,197 INFO L226 Difference]: Without dead ends: 2161 [2018-12-02 06:01:57,197 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-12-02 06:01:57,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2018-12-02 06:01:57,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2161. [2018-12-02 06:01:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2161 states. [2018-12-02 06:01:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 8220 transitions. [2018-12-02 06:01:57,232 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 8220 transitions. Word has length 39 [2018-12-02 06:01:57,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:01:57,232 INFO L480 AbstractCegarLoop]: Abstraction has 2161 states and 8220 transitions. [2018-12-02 06:01:57,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 06:01:57,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 8220 transitions. [2018-12-02 06:01:57,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-02 06:01:57,233 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:01:57,234 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:01:57,234 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:01:57,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:01:57,234 INFO L82 PathProgramCache]: Analyzing trace with hash -481726390, now seen corresponding path program 4 times [2018-12-02 06:01:57,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 06:01:57,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:57,235 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 06:01:57,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:01:57,235 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 06:01:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:01:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:01:57,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:01:57,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 06:01:57,284 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 06:01:57,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 06:01:57,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 06:01:57,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 06:01:57,284 INFO L87 Difference]: Start difference. First operand 2161 states and 8220 transitions. Second operand 7 states. [2018-12-02 06:01:57,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:01:57,332 INFO L93 Difference]: Finished difference Result 1649 states and 6172 transitions. [2018-12-02 06:01:57,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 06:01:57,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-12-02 06:01:57,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:01:57,332 INFO L225 Difference]: With dead ends: 1649 [2018-12-02 06:01:57,332 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 06:01:57,332 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-12-02 06:01:57,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 06:01:57,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 06:01:57,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 06:01:57,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 06:01:57,333 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-12-02 06:01:57,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:01:57,333 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 06:01:57,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 06:01:57,333 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 06:01:57,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 06:01:57,335 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-02 06:01:57,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:01:57 BasicIcfg [2018-12-02 06:01:57,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 06:01:57,336 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 06:01:57,336 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 06:01:57,336 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 06:01:57,336 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:01:54" (3/4) ... [2018-12-02 06:01:57,338 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 06:01:57,342 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2018-12-02 06:01:57,342 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2018-12-02 06:01:57,342 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2018-12-02 06:01:57,343 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2018-12-02 06:01:57,345 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-12-02 06:01:57,345 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-02 06:01:57,371 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4db2da1f-faab-46da-bfb3-1d7fd9b09fa6/bin-2019/utaipan/witness.graphml [2018-12-02 06:01:57,372 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 06:01:57,372 INFO L168 Benchmark]: Toolchain (without parser) took 3322.32 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 303.6 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -135.9 MB). Peak memory consumption was 167.7 MB. Max. memory is 11.5 GB. [2018-12-02 06:01:57,374 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-12-02 06:01:57,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -149.2 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2018-12-02 06:01:57,374 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:01:57,374 INFO L168 Benchmark]: Boogie Preprocessor took 20.87 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-12-02 06:01:57,375 INFO L168 Benchmark]: RCFGBuilder took 237.99 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2018-12-02 06:01:57,375 INFO L168 Benchmark]: TraceAbstraction took 2685.80 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 173.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -20.9 MB). Peak memory consumption was 152.7 MB. Max. memory is 11.5 GB. [2018-12-02 06:01:57,375 INFO L168 Benchmark]: Witness Printer took 35.84 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:01:57,377 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 305.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -149.2 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.87 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 237.99 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2685.80 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 173.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -20.9 MB). Peak memory consumption was 152.7 MB. Max. memory is 11.5 GB. * Witness Printer took 35.84 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 88 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 560 SDtfs, 855 SDslu, 1528 SDs, 0 SdLazy, 188 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13136occurred 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: 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 302 NumberOfCodeBlocks, 302 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 27742 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...