./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_tso.oepc_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_afe55ef8-6c0e-4593-87dc-8ad4ee9e6591/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_afe55ef8-6c0e-4593-87dc-8ad4ee9e6591/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_afe55ef8-6c0e-4593-87dc-8ad4ee9e6591/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_afe55ef8-6c0e-4593-87dc-8ad4ee9e6591/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_tso.oepc_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_afe55ef8-6c0e-4593-87dc-8ad4ee9e6591/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_afe55ef8-6c0e-4593-87dc-8ad4ee9e6591/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 1e2923dd1048c6f2a617ab0da430b342170b4788 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 14:39:24,490 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 14:39:24,491 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 14:39:24,497 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 14:39:24,497 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 14:39:24,498 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 14:39:24,498 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 14:39:24,499 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 14:39:24,500 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 14:39:24,500 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 14:39:24,501 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 14:39:24,501 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 14:39:24,502 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 14:39:24,502 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 14:39:24,503 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 14:39:24,503 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 14:39:24,503 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 14:39:24,504 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 14:39:24,505 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 14:39:24,506 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 14:39:24,506 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 14:39:24,507 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 14:39:24,508 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 14:39:24,508 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 14:39:24,508 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 14:39:24,509 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 14:39:24,509 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 14:39:24,510 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 14:39:24,510 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 14:39:24,511 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 14:39:24,511 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 14:39:24,511 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 14:39:24,511 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 14:39:24,512 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 14:39:24,512 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 14:39:24,512 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 14:39:24,513 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_afe55ef8-6c0e-4593-87dc-8ad4ee9e6591/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 14:39:24,520 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 14:39:24,520 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 14:39:24,520 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 14:39:24,520 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 14:39:24,521 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 14:39:24,521 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 14:39:24,521 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 14:39:24,521 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 14:39:24,521 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 14:39:24,521 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 14:39:24,521 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 14:39:24,521 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 14:39:24,521 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 14:39:24,522 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 14:39:24,522 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 14:39:24,522 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 14:39:24,522 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 14:39:24,522 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 14:39:24,522 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 14:39:24,522 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 14:39:24,522 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 14:39:24,522 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 14:39:24,522 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 14:39:24,522 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 14:39:24,523 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 14:39:24,523 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 14:39:24,523 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 14:39:24,523 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 14:39:24,523 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 14:39:24,523 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 14:39:24,523 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 14:39:24,523 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 14:39:24,523 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 14:39:24,523 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 14:39:24,523 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 14:39:24,523 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 14:39:24,524 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_afe55ef8-6c0e-4593-87dc-8ad4ee9e6591/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 -> 1e2923dd1048c6f2a617ab0da430b342170b4788 [2018-12-02 14:39:24,541 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 14:39:24,548 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 14:39:24,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 14:39:24,551 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 14:39:24,551 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 14:39:24,552 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_afe55ef8-6c0e-4593-87dc-8ad4ee9e6591/bin-2019/utaipan/../../sv-benchmarks/c/pthread-wmm/safe019_tso.oepc_true-unreach-call.i [2018-12-02 14:39:24,590 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_afe55ef8-6c0e-4593-87dc-8ad4ee9e6591/bin-2019/utaipan/data/b38f6bae9/63d6261894e14f39b9f0aa72f50f09d1/FLAG76f0b7941 [2018-12-02 14:39:25,059 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 14:39:25,059 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_afe55ef8-6c0e-4593-87dc-8ad4ee9e6591/sv-benchmarks/c/pthread-wmm/safe019_tso.oepc_true-unreach-call.i [2018-12-02 14:39:25,066 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_afe55ef8-6c0e-4593-87dc-8ad4ee9e6591/bin-2019/utaipan/data/b38f6bae9/63d6261894e14f39b9f0aa72f50f09d1/FLAG76f0b7941 [2018-12-02 14:39:25,075 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_afe55ef8-6c0e-4593-87dc-8ad4ee9e6591/bin-2019/utaipan/data/b38f6bae9/63d6261894e14f39b9f0aa72f50f09d1 [2018-12-02 14:39:25,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 14:39:25,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 14:39:25,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 14:39:25,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 14:39:25,080 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 14:39:25,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:39:25" (1/1) ... [2018-12-02 14:39:25,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6ee20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:39:25, skipping insertion in model container [2018-12-02 14:39:25,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:39:25" (1/1) ... [2018-12-02 14:39:25,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 14:39:25,105 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 14:39:25,268 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 14:39:25,275 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 14:39:25,342 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 14:39:25,375 INFO L195 MainTranslator]: Completed translation [2018-12-02 14:39:25,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:39:25 WrapperNode [2018-12-02 14:39:25,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 14:39:25,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 14:39:25,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 14:39:25,376 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 14:39:25,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:39:25" (1/1) ... [2018-12-02 14:39:25,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:39:25" (1/1) ... [2018-12-02 14:39:25,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 14:39:25,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 14:39:25,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 14:39:25,403 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 14:39:25,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:39:25" (1/1) ... [2018-12-02 14:39:25,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:39:25" (1/1) ... [2018-12-02 14:39:25,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:39:25" (1/1) ... [2018-12-02 14:39:25,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:39:25" (1/1) ... [2018-12-02 14:39:25,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:39:25" (1/1) ... [2018-12-02 14:39:25,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:39:25" (1/1) ... [2018-12-02 14:39:25,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:39:25" (1/1) ... [2018-12-02 14:39:25,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 14:39:25,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 14:39:25,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 14:39:25,418 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 14:39:25,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:39:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_afe55ef8-6c0e-4593-87dc-8ad4ee9e6591/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 14:39:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 14:39:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 14:39:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-12-02 14:39:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 14:39:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2018-12-02 14:39:25,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2018-12-02 14:39:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2018-12-02 14:39:25,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2018-12-02 14:39:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2018-12-02 14:39:25,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2018-12-02 14:39:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2018-12-02 14:39:25,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2018-12-02 14:39:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-12-02 14:39:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 14:39:25,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 14:39:25,459 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 14:39:25,626 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 14:39:25,626 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-02 14:39:25,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:39:25 BoogieIcfgContainer [2018-12-02 14:39:25,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 14:39:25,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 14:39:25,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 14:39:25,629 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 14:39:25,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:39:25" (1/3) ... [2018-12-02 14:39:25,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da76dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:39:25, skipping insertion in model container [2018-12-02 14:39:25,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:39:25" (2/3) ... [2018-12-02 14:39:25,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da76dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:39:25, skipping insertion in model container [2018-12-02 14:39:25,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:39:25" (3/3) ... [2018-12-02 14:39:25,631 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_tso.oepc_true-unreach-call.i [2018-12-02 14:39:25,651 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,652 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,652 WARN L317 ript$VariableManager]: TermVariabe Thread3_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,652 WARN L317 ript$VariableManager]: TermVariabe Thread3_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,652 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,652 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,652 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,653 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,653 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,653 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,653 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,653 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,653 WARN L317 ript$VariableManager]: TermVariabe Thread0_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,653 WARN L317 ript$VariableManager]: TermVariabe Thread0_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,654 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,654 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,654 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,654 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,654 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,654 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,654 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,655 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,655 WARN L317 ript$VariableManager]: TermVariabe Thread1_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,655 WARN L317 ript$VariableManager]: TermVariabe Thread1_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,655 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,655 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,655 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,655 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,656 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,656 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,656 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,656 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,656 WARN L317 ript$VariableManager]: TermVariabe Thread2_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,656 WARN L317 ript$VariableManager]: TermVariabe Thread2_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,656 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,657 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,657 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,657 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,657 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,657 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:39:25,664 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-02 14:39:25,664 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 14:39:25,669 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 14:39:25,678 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 14:39:25,694 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 14:39:25,694 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 14:39:25,694 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 14:39:25,694 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 14:39:25,694 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 14:39:25,694 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 14:39:25,694 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 14:39:25,694 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 14:39:25,700 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67places, 63 transitions [2018-12-02 14:39:26,234 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13135 states. [2018-12-02 14:39:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 13135 states. [2018-12-02 14:39:26,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-02 14:39:26,250 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:39:26,250 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:39:26,252 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:39:26,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:39:26,255 INFO L82 PathProgramCache]: Analyzing trace with hash 2121463999, now seen corresponding path program 1 times [2018-12-02 14:39:26,257 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:39:26,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:26,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:39:26,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:26,294 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:39:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:39:26,421 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 14:39:26,423 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:39:26,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 14:39:26,423 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:39:26,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 14:39:26,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 14:39:26,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 14:39:26,435 INFO L87 Difference]: Start difference. First operand 13135 states. Second operand 4 states. [2018-12-02 14:39:26,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:39:26,558 INFO L93 Difference]: Finished difference Result 13741 states and 55792 transitions. [2018-12-02 14:39:26,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 14:39:26,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-12-02 14:39:26,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:39:26,590 INFO L225 Difference]: With dead ends: 13741 [2018-12-02 14:39:26,590 INFO L226 Difference]: Without dead ends: 5628 [2018-12-02 14:39:26,591 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 14:39:26,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2018-12-02 14:39:26,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 5628. [2018-12-02 14:39:26,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5628 states. [2018-12-02 14:39:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5628 states to 5628 states and 22351 transitions. [2018-12-02 14:39:26,743 INFO L78 Accepts]: Start accepts. Automaton has 5628 states and 22351 transitions. Word has length 34 [2018-12-02 14:39:26,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:39:26,744 INFO L480 AbstractCegarLoop]: Abstraction has 5628 states and 22351 transitions. [2018-12-02 14:39:26,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 14:39:26,744 INFO L276 IsEmpty]: Start isEmpty. Operand 5628 states and 22351 transitions. [2018-12-02 14:39:26,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-02 14:39:26,747 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:39:26,748 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 14:39:26,748 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:39:26,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:39:26,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1168974297, now seen corresponding path program 1 times [2018-12-02 14:39:26,748 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:39:26,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:26,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:39:26,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:26,752 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:39:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:39:26,797 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 14:39:26,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:39:26,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 14:39:26,797 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:39:26,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 14:39:26,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 14:39:26,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 14:39:26,799 INFO L87 Difference]: Start difference. First operand 5628 states and 22351 transitions. Second operand 5 states. [2018-12-02 14:39:26,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:39:26,872 INFO L93 Difference]: Finished difference Result 6140 states and 23831 transitions. [2018-12-02 14:39:26,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 14:39:26,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-12-02 14:39:26,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:39:26,890 INFO L225 Difference]: With dead ends: 6140 [2018-12-02 14:39:26,890 INFO L226 Difference]: Without dead ends: 5516 [2018-12-02 14:39:26,891 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 14:39:26,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2018-12-02 14:39:26,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 5516. [2018-12-02 14:39:26,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5516 states. [2018-12-02 14:39:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 21819 transitions. [2018-12-02 14:39:27,026 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 21819 transitions. Word has length 35 [2018-12-02 14:39:27,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:39:27,026 INFO L480 AbstractCegarLoop]: Abstraction has 5516 states and 21819 transitions. [2018-12-02 14:39:27,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 14:39:27,027 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 21819 transitions. [2018-12-02 14:39:27,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-02 14:39:27,030 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:39:27,031 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 14:39:27,031 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:39:27,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:39:27,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1525655991, now seen corresponding path program 1 times [2018-12-02 14:39:27,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:39:27,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:27,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:39:27,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:27,034 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:39:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:39:27,078 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 14:39:27,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:39:27,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 14:39:27,079 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:39:27,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 14:39:27,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 14:39:27,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-02 14:39:27,079 INFO L87 Difference]: Start difference. First operand 5516 states and 21819 transitions. Second operand 6 states. [2018-12-02 14:39:27,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:39:27,165 INFO L93 Difference]: Finished difference Result 5452 states and 20827 transitions. [2018-12-02 14:39:27,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 14:39:27,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2018-12-02 14:39:27,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:39:27,190 INFO L225 Difference]: With dead ends: 5452 [2018-12-02 14:39:27,190 INFO L226 Difference]: Without dead ends: 4844 [2018-12-02 14:39:27,190 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 14:39:27,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2018-12-02 14:39:27,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 4844. [2018-12-02 14:39:27,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4844 states. [2018-12-02 14:39:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 18795 transitions. [2018-12-02 14:39:27,280 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 18795 transitions. Word has length 36 [2018-12-02 14:39:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:39:27,280 INFO L480 AbstractCegarLoop]: Abstraction has 4844 states and 18795 transitions. [2018-12-02 14:39:27,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 14:39:27,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 18795 transitions. [2018-12-02 14:39:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 14:39:27,284 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:39:27,284 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 14:39:27,285 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:39:27,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:39:27,285 INFO L82 PathProgramCache]: Analyzing trace with hash -113664757, now seen corresponding path program 1 times [2018-12-02 14:39:27,285 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:39:27,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:27,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:39:27,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:27,288 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:39:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:39:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:39:27,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:39:27,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 14:39:27,347 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:39:27,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 14:39:27,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 14:39:27,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-02 14:39:27,347 INFO L87 Difference]: Start difference. First operand 4844 states and 18795 transitions. Second operand 7 states. [2018-12-02 14:39:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:39:27,418 INFO L93 Difference]: Finished difference Result 3564 states and 13035 transitions. [2018-12-02 14:39:27,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 14:39:27,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2018-12-02 14:39:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:39:27,425 INFO L225 Difference]: With dead ends: 3564 [2018-12-02 14:39:27,425 INFO L226 Difference]: Without dead ends: 3052 [2018-12-02 14:39:27,425 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 14:39:27,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2018-12-02 14:39:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 3052. [2018-12-02 14:39:27,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3052 states. [2018-12-02 14:39:27,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 11179 transitions. [2018-12-02 14:39:27,466 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 11179 transitions. Word has length 37 [2018-12-02 14:39:27,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:39:27,466 INFO L480 AbstractCegarLoop]: Abstraction has 3052 states and 11179 transitions. [2018-12-02 14:39:27,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 14:39:27,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 11179 transitions. [2018-12-02 14:39:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-02 14:39:27,469 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:39:27,469 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 14:39:27,469 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:39:27,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:39:27,469 INFO L82 PathProgramCache]: Analyzing trace with hash -2069274437, now seen corresponding path program 1 times [2018-12-02 14:39:27,470 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:39:27,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:27,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:39:27,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:27,472 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:39:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:39:27,537 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 14:39:27,537 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:39:27,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 14:39:27,537 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:39:27,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 14:39:27,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 14:39:27,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-02 14:39:27,538 INFO L87 Difference]: Start difference. First operand 3052 states and 11179 transitions. Second operand 6 states. [2018-12-02 14:39:27,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:39:27,602 INFO L93 Difference]: Finished difference Result 4732 states and 17539 transitions. [2018-12-02 14:39:27,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 14:39:27,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-12-02 14:39:27,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:39:27,609 INFO L225 Difference]: With dead ends: 4732 [2018-12-02 14:39:27,609 INFO L226 Difference]: Without dead ends: 2952 [2018-12-02 14:39:27,609 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-12-02 14:39:27,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2018-12-02 14:39:27,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2952. [2018-12-02 14:39:27,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2952 states. [2018-12-02 14:39:27,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 10819 transitions. [2018-12-02 14:39:27,644 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 10819 transitions. Word has length 38 [2018-12-02 14:39:27,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:39:27,645 INFO L480 AbstractCegarLoop]: Abstraction has 2952 states and 10819 transitions. [2018-12-02 14:39:27,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 14:39:27,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 10819 transitions. [2018-12-02 14:39:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-02 14:39:27,647 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:39:27,647 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 14:39:27,647 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:39:27,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:39:27,647 INFO L82 PathProgramCache]: Analyzing trace with hash -753117133, now seen corresponding path program 2 times [2018-12-02 14:39:27,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:39:27,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:27,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:39:27,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:27,649 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:39:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:39:27,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:39:27,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:39:27,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 14:39:27,700 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:39:27,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 14:39:27,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 14:39:27,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 14:39:27,701 INFO L87 Difference]: Start difference. First operand 2952 states and 10819 transitions. Second operand 7 states. [2018-12-02 14:39:27,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:39:27,776 INFO L93 Difference]: Finished difference Result 4952 states and 18235 transitions. [2018-12-02 14:39:27,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 14:39:27,777 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-12-02 14:39:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:39:27,782 INFO L225 Difference]: With dead ends: 4952 [2018-12-02 14:39:27,782 INFO L226 Difference]: Without dead ends: 2756 [2018-12-02 14:39:27,782 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 14:39:27,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2018-12-02 14:39:27,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2756. [2018-12-02 14:39:27,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2756 states. [2018-12-02 14:39:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 10203 transitions. [2018-12-02 14:39:27,839 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 10203 transitions. Word has length 38 [2018-12-02 14:39:27,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:39:27,839 INFO L480 AbstractCegarLoop]: Abstraction has 2756 states and 10203 transitions. [2018-12-02 14:39:27,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 14:39:27,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 10203 transitions. [2018-12-02 14:39:27,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-02 14:39:27,842 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:39:27,842 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 14:39:27,842 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:39:27,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:39:27,842 INFO L82 PathProgramCache]: Analyzing trace with hash -894920831, now seen corresponding path program 3 times [2018-12-02 14:39:27,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:39:27,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:27,844 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 14:39:27,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:27,844 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:39:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:39:27,913 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 14:39:27,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:39:27,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 14:39:27,913 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:39:27,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 14:39:27,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 14:39:27,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 14:39:27,914 INFO L87 Difference]: Start difference. First operand 2756 states and 10203 transitions. Second operand 7 states. [2018-12-02 14:39:27,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:39:27,972 INFO L93 Difference]: Finished difference Result 4612 states and 17131 transitions. [2018-12-02 14:39:27,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 14:39:27,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-12-02 14:39:27,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:39:27,976 INFO L225 Difference]: With dead ends: 4612 [2018-12-02 14:39:27,976 INFO L226 Difference]: Without dead ends: 2576 [2018-12-02 14:39:27,977 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 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 14:39:27,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2018-12-02 14:39:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2576. [2018-12-02 14:39:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2576 states. [2018-12-02 14:39:28,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 9591 transitions. [2018-12-02 14:39:28,003 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 9591 transitions. Word has length 38 [2018-12-02 14:39:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:39:28,003 INFO L480 AbstractCegarLoop]: Abstraction has 2576 states and 9591 transitions. [2018-12-02 14:39:28,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 14:39:28,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 9591 transitions. [2018-12-02 14:39:28,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-02 14:39:28,005 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:39:28,005 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 14:39:28,005 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:39:28,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:39:28,005 INFO L82 PathProgramCache]: Analyzing trace with hash 358548407, now seen corresponding path program 4 times [2018-12-02 14:39:28,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:39:28,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:28,007 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 14:39:28,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:39:28,007 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:39:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:39:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:39:28,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:39:28,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 14:39:28,090 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:39:28,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 14:39:28,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 14:39:28,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 14:39:28,091 INFO L87 Difference]: Start difference. First operand 2576 states and 9591 transitions. Second operand 7 states. [2018-12-02 14:39:28,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:39:28,137 INFO L93 Difference]: Finished difference Result 2064 states and 7543 transitions. [2018-12-02 14:39:28,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 14:39:28,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-12-02 14:39:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:39:28,137 INFO L225 Difference]: With dead ends: 2064 [2018-12-02 14:39:28,137 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 14:39:28,137 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 14:39:28,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 14:39:28,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 14:39:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 14:39:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 14:39:28,138 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2018-12-02 14:39:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:39:28,138 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 14:39:28,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 14:39:28,138 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 14:39:28,138 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 14:39:28,140 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-02 14:39:28,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:39:28 BasicIcfg [2018-12-02 14:39:28,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 14:39:28,141 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 14:39:28,141 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 14:39:28,142 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 14:39:28,142 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:39:25" (3/4) ... [2018-12-02 14:39:28,144 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 14:39:28,148 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2018-12-02 14:39:28,148 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2018-12-02 14:39:28,149 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2018-12-02 14:39:28,149 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2018-12-02 14:39:28,152 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-12-02 14:39:28,152 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-02 14:39:28,181 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_afe55ef8-6c0e-4593-87dc-8ad4ee9e6591/bin-2019/utaipan/witness.graphml [2018-12-02 14:39:28,181 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 14:39:28,182 INFO L168 Benchmark]: Toolchain (without parser) took 3105.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 195.6 MB). Free memory was 948.1 MB in the beginning and 1.0 GB in the end (delta: -52.8 MB). Peak memory consumption was 142.8 MB. Max. memory is 11.5 GB. [2018-12-02 14:39:28,183 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 14:39:28,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -156.1 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2018-12-02 14:39:28,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.33 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 14:39:28,184 INFO L168 Benchmark]: Boogie Preprocessor took 14.85 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 14:39:28,184 INFO L168 Benchmark]: RCFGBuilder took 208.87 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: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2018-12-02 14:39:28,184 INFO L168 Benchmark]: TraceAbstraction took 2514.04 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 77.2 MB). Peak memory consumption was 146.9 MB. Max. memory is 11.5 GB. [2018-12-02 14:39:28,185 INFO L168 Benchmark]: Witness Printer took 39.89 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. [2018-12-02 14:39:28,187 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 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 297.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -156.1 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.33 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 14.85 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 208.87 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: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2514.04 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 77.2 MB). Peak memory consumption was 146.9 MB. Max. memory is 11.5 GB. * Witness Printer took 39.89 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: 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, 87 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 566 SDtfs, 879 SDslu, 1515 SDs, 0 SdLazy, 173 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13135occurred 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, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 25834 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...