./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_b93a6ce6-ba7b-47b3-864e-7af934c6c65b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b93a6ce6-ba7b-47b3-864e-7af934c6c65b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b93a6ce6-ba7b-47b3-864e-7af934c6c65b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b93a6ce6-ba7b-47b3-864e-7af934c6c65b/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_b93a6ce6-ba7b-47b3-864e-7af934c6c65b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b93a6ce6-ba7b-47b3-864e-7af934c6c65b/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 [2018-12-09 11:28:13,677 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 11:28:13,677 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 11:28:13,683 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 11:28:13,684 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 11:28:13,684 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 11:28:13,685 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 11:28:13,685 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 11:28:13,686 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 11:28:13,687 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 11:28:13,687 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 11:28:13,687 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 11:28:13,688 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 11:28:13,688 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 11:28:13,689 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 11:28:13,689 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 11:28:13,689 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 11:28:13,690 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 11:28:13,691 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 11:28:13,692 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 11:28:13,692 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 11:28:13,693 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 11:28:13,694 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 11:28:13,694 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 11:28:13,694 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 11:28:13,695 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 11:28:13,695 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 11:28:13,696 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 11:28:13,696 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 11:28:13,697 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 11:28:13,697 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 11:28:13,697 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 11:28:13,697 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 11:28:13,697 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 11:28:13,698 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 11:28:13,698 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 11:28:13,698 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b93a6ce6-ba7b-47b3-864e-7af934c6c65b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 11:28:13,705 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 11:28:13,705 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 11:28:13,706 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 11:28:13,706 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 11:28:13,706 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 11:28:13,706 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 11:28:13,706 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 11:28:13,706 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 11:28:13,706 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 11:28:13,706 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 11:28:13,707 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 11:28:13,707 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 11:28:13,707 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 11:28:13,707 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 11:28:13,707 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 11:28:13,707 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 11:28:13,707 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 11:28:13,708 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 11:28:13,708 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 11:28:13,708 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 11:28:13,708 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 11:28:13,708 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 11:28:13,708 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 11:28:13,708 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 11:28:13,708 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 11:28:13,709 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 11:28:13,709 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 11:28:13,709 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 11:28:13,709 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 11:28:13,709 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 11:28:13,709 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 11:28:13,709 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 11:28:13,709 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 11:28:13,710 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 11:28:13,710 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 11:28:13,710 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 11:28:13,710 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_b93a6ce6-ba7b-47b3-864e-7af934c6c65b/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 [2018-12-09 11:28:13,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 11:28:13,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 11:28:13,735 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 11:28:13,736 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 11:28:13,736 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 11:28:13,736 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b93a6ce6-ba7b-47b3-864e-7af934c6c65b/bin-2019/utaipan/../../sv-benchmarks/c/pthread-wmm/safe019_tso.oepc_true-unreach-call.i [2018-12-09 11:28:13,771 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b93a6ce6-ba7b-47b3-864e-7af934c6c65b/bin-2019/utaipan/data/84a6219dc/62f2bd797a504258b4b97edfa350ebd7/FLAGfb631135d [2018-12-09 11:28:14,092 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 11:28:14,092 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b93a6ce6-ba7b-47b3-864e-7af934c6c65b/sv-benchmarks/c/pthread-wmm/safe019_tso.oepc_true-unreach-call.i [2018-12-09 11:28:14,098 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b93a6ce6-ba7b-47b3-864e-7af934c6c65b/bin-2019/utaipan/data/84a6219dc/62f2bd797a504258b4b97edfa350ebd7/FLAGfb631135d [2018-12-09 11:28:14,504 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b93a6ce6-ba7b-47b3-864e-7af934c6c65b/bin-2019/utaipan/data/84a6219dc/62f2bd797a504258b4b97edfa350ebd7 [2018-12-09 11:28:14,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 11:28:14,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 11:28:14,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 11:28:14,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 11:28:14,509 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 11:28:14,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:28:14" (1/1) ... [2018-12-09 11:28:14,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628262cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:28:14, skipping insertion in model container [2018-12-09 11:28:14,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:28:14" (1/1) ... [2018-12-09 11:28:14,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 11:28:14,544 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 11:28:14,736 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:28:14,745 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 11:28:14,817 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:28:14,848 INFO L195 MainTranslator]: Completed translation [2018-12-09 11:28:14,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:28:14 WrapperNode [2018-12-09 11:28:14,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 11:28:14,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 11:28:14,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 11:28:14,849 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 11:28:14,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:28:14" (1/1) ... [2018-12-09 11:28:14,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:28:14" (1/1) ... [2018-12-09 11:28:14,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 11:28:14,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 11:28:14,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 11:28:14,875 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 11:28:14,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:28:14" (1/1) ... [2018-12-09 11:28:14,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:28:14" (1/1) ... [2018-12-09 11:28:14,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:28:14" (1/1) ... [2018-12-09 11:28:14,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:28:14" (1/1) ... [2018-12-09 11:28:14,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:28:14" (1/1) ... [2018-12-09 11:28:14,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:28:14" (1/1) ... [2018-12-09 11:28:14,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:28:14" (1/1) ... [2018-12-09 11:28:14,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 11:28:14,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 11:28:14,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 11:28:14,890 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 11:28:14,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:28:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93a6ce6-ba7b-47b3-864e-7af934c6c65b/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 [2018-12-09 11:28:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 11:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 11:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-12-09 11:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 11:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2018-12-09 11:28:14,923 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2018-12-09 11:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2018-12-09 11:28:14,923 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2018-12-09 11:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2018-12-09 11:28:14,923 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2018-12-09 11:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2018-12-09 11:28:14,923 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2018-12-09 11:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-12-09 11:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 11:28:14,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 11:28:14,924 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 11:28:15,076 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 11:28:15,076 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-09 11:28:15,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:28:15 BoogieIcfgContainer [2018-12-09 11:28:15,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 11:28:15,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 11:28:15,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 11:28:15,079 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 11:28:15,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:28:14" (1/3) ... [2018-12-09 11:28:15,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bcf7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:28:15, skipping insertion in model container [2018-12-09 11:28:15,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:28:14" (2/3) ... [2018-12-09 11:28:15,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bcf7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:28:15, skipping insertion in model container [2018-12-09 11:28:15,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:28:15" (3/3) ... [2018-12-09 11:28:15,081 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_tso.oepc_true-unreach-call.i [2018-12-09 11:28:15,102 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,102 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,102 WARN L317 ript$VariableManager]: TermVariabe Thread3_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,102 WARN L317 ript$VariableManager]: TermVariabe Thread3_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,102 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,102 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,103 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,103 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,103 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,103 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,103 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,103 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,103 WARN L317 ript$VariableManager]: TermVariabe Thread0_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,103 WARN L317 ript$VariableManager]: TermVariabe Thread0_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,103 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,103 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,103 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,104 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,104 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,104 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,104 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,104 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,104 WARN L317 ript$VariableManager]: TermVariabe Thread1_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,104 WARN L317 ript$VariableManager]: TermVariabe Thread1_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,104 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,104 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,104 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,105 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,105 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,105 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,105 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,105 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,105 WARN L317 ript$VariableManager]: TermVariabe Thread2_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,105 WARN L317 ript$VariableManager]: TermVariabe Thread2_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,105 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,105 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,105 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,105 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,106 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,106 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:28:15,116 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 11:28:15,116 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 11:28:15,121 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 11:28:15,131 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 11:28:15,146 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 11:28:15,146 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 11:28:15,146 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 11:28:15,146 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 11:28:15,146 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 11:28:15,146 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 11:28:15,146 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 11:28:15,146 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 11:28:15,152 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67places, 63 transitions [2018-12-09 11:28:15,774 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13135 states. [2018-12-09 11:28:15,776 INFO L276 IsEmpty]: Start isEmpty. Operand 13135 states. [2018-12-09 11:28:15,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-09 11:28:15,790 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:28:15,791 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] [2018-12-09 11:28:15,792 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:28:15,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:28:15,796 INFO L82 PathProgramCache]: Analyzing trace with hash 2121463999, now seen corresponding path program 1 times [2018-12-09 11:28:15,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:28:15,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:15,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:28:15,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:15,834 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:28:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:28:15,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:28:15,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:28:15,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:28:15,960 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:28:15,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:28:15,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:28:15,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:28:15,973 INFO L87 Difference]: Start difference. First operand 13135 states. Second operand 4 states. [2018-12-09 11:28:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:28:16,117 INFO L93 Difference]: Finished difference Result 13741 states and 55792 transitions. [2018-12-09 11:28:16,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 11:28:16,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-12-09 11:28:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:28:16,151 INFO L225 Difference]: With dead ends: 13741 [2018-12-09 11:28:16,151 INFO L226 Difference]: Without dead ends: 5628 [2018-12-09 11:28:16,153 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 [2018-12-09 11:28:16,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2018-12-09 11:28:16,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 5628. [2018-12-09 11:28:16,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5628 states. [2018-12-09 11:28:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5628 states to 5628 states and 22351 transitions. [2018-12-09 11:28:16,314 INFO L78 Accepts]: Start accepts. Automaton has 5628 states and 22351 transitions. Word has length 34 [2018-12-09 11:28:16,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:28:16,314 INFO L480 AbstractCegarLoop]: Abstraction has 5628 states and 22351 transitions. [2018-12-09 11:28:16,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:28:16,315 INFO L276 IsEmpty]: Start isEmpty. Operand 5628 states and 22351 transitions. [2018-12-09 11:28:16,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 11:28:16,318 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:28:16,318 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] [2018-12-09 11:28:16,318 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:28:16,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:28:16,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1567952221, now seen corresponding path program 1 times [2018-12-09 11:28:16,319 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:28:16,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:16,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:28:16,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:16,323 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:28:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:28:16,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:28:16,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:28:16,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 11:28:16,380 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:28:16,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 11:28:16,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 11:28:16,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 11:28:16,382 INFO L87 Difference]: Start difference. First operand 5628 states and 22351 transitions. Second operand 5 states. [2018-12-09 11:28:16,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:28:16,467 INFO L93 Difference]: Finished difference Result 6140 states and 23831 transitions. [2018-12-09 11:28:16,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 11:28:16,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-12-09 11:28:16,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:28:16,496 INFO L225 Difference]: With dead ends: 6140 [2018-12-09 11:28:16,496 INFO L226 Difference]: Without dead ends: 5516 [2018-12-09 11:28:16,497 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 [2018-12-09 11:28:16,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2018-12-09 11:28:16,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 5516. [2018-12-09 11:28:16,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5516 states. [2018-12-09 11:28:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 21819 transitions. [2018-12-09 11:28:16,659 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 21819 transitions. Word has length 35 [2018-12-09 11:28:16,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:28:16,660 INFO L480 AbstractCegarLoop]: Abstraction has 5516 states and 21819 transitions. [2018-12-09 11:28:16,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 11:28:16,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 21819 transitions. [2018-12-09 11:28:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 11:28:16,664 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:28:16,664 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] [2018-12-09 11:28:16,664 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:28:16,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:28:16,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1714687443, now seen corresponding path program 1 times [2018-12-09 11:28:16,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:28:16,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:16,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:28:16,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:16,667 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:28:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:28:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:28:16,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:28:16,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 11:28:16,705 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:28:16,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 11:28:16,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 11:28:16,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:28:16,706 INFO L87 Difference]: Start difference. First operand 5516 states and 21819 transitions. Second operand 6 states. [2018-12-09 11:28:16,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:28:16,793 INFO L93 Difference]: Finished difference Result 5452 states and 20827 transitions. [2018-12-09 11:28:16,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 11:28:16,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2018-12-09 11:28:16,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:28:16,810 INFO L225 Difference]: With dead ends: 5452 [2018-12-09 11:28:16,810 INFO L226 Difference]: Without dead ends: 4844 [2018-12-09 11:28:16,811 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 [2018-12-09 11:28:16,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2018-12-09 11:28:16,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 4844. [2018-12-09 11:28:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4844 states. [2018-12-09 11:28:16,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 18795 transitions. [2018-12-09 11:28:16,898 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 18795 transitions. Word has length 36 [2018-12-09 11:28:16,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:28:16,899 INFO L480 AbstractCegarLoop]: Abstraction has 4844 states and 18795 transitions. [2018-12-09 11:28:16,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 11:28:16,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 18795 transitions. [2018-12-09 11:28:16,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-09 11:28:16,902 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:28:16,903 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] [2018-12-09 11:28:16,903 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:28:16,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:28:16,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1780063403, now seen corresponding path program 1 times [2018-12-09 11:28:16,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:28:16,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:16,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:28:16,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:16,905 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:28:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:28:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:28:16,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:28:16,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 11:28:16,945 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:28:16,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 11:28:16,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 11:28:16,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 11:28:16,945 INFO L87 Difference]: Start difference. First operand 4844 states and 18795 transitions. Second operand 7 states. [2018-12-09 11:28:17,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:28:17,022 INFO L93 Difference]: Finished difference Result 3564 states and 13035 transitions. [2018-12-09 11:28:17,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 11:28:17,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2018-12-09 11:28:17,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:28:17,029 INFO L225 Difference]: With dead ends: 3564 [2018-12-09 11:28:17,029 INFO L226 Difference]: Without dead ends: 3052 [2018-12-09 11:28:17,030 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 [2018-12-09 11:28:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2018-12-09 11:28:17,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 3052. [2018-12-09 11:28:17,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3052 states. [2018-12-09 11:28:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 11179 transitions. [2018-12-09 11:28:17,080 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 11179 transitions. Word has length 37 [2018-12-09 11:28:17,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:28:17,080 INFO L480 AbstractCegarLoop]: Abstraction has 3052 states and 11179 transitions. [2018-12-09 11:28:17,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 11:28:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 11179 transitions. [2018-12-09 11:28:17,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 11:28:17,083 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:28:17,083 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] [2018-12-09 11:28:17,084 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:28:17,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:28:17,084 INFO L82 PathProgramCache]: Analyzing trace with hash 2106942385, now seen corresponding path program 1 times [2018-12-09 11:28:17,084 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:28:17,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:17,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:28:17,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:17,085 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:28:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:28:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:28:17,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:28:17,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 11:28:17,143 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:28:17,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 11:28:17,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 11:28:17,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:28:17,143 INFO L87 Difference]: Start difference. First operand 3052 states and 11179 transitions. Second operand 6 states. [2018-12-09 11:28:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:28:17,216 INFO L93 Difference]: Finished difference Result 4732 states and 17539 transitions. [2018-12-09 11:28:17,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 11:28:17,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-12-09 11:28:17,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:28:17,223 INFO L225 Difference]: With dead ends: 4732 [2018-12-09 11:28:17,223 INFO L226 Difference]: Without dead ends: 2952 [2018-12-09 11:28:17,223 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 [2018-12-09 11:28:17,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2018-12-09 11:28:17,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2952. [2018-12-09 11:28:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2952 states. [2018-12-09 11:28:17,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 10819 transitions. [2018-12-09 11:28:17,272 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 10819 transitions. Word has length 38 [2018-12-09 11:28:17,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:28:17,272 INFO L480 AbstractCegarLoop]: Abstraction has 2952 states and 10819 transitions. [2018-12-09 11:28:17,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 11:28:17,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 10819 transitions. [2018-12-09 11:28:17,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 11:28:17,275 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:28:17,275 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] [2018-12-09 11:28:17,275 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:28:17,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:28:17,275 INFO L82 PathProgramCache]: Analyzing trace with hash -871867607, now seen corresponding path program 2 times [2018-12-09 11:28:17,275 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:28:17,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:17,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:28:17,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:17,278 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:28:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:28:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:28:17,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:28:17,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 11:28:17,343 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:28:17,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 11:28:17,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 11:28:17,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 11:28:17,343 INFO L87 Difference]: Start difference. First operand 2952 states and 10819 transitions. Second operand 7 states. [2018-12-09 11:28:17,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:28:17,433 INFO L93 Difference]: Finished difference Result 4952 states and 18235 transitions. [2018-12-09 11:28:17,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 11:28:17,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-12-09 11:28:17,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:28:17,440 INFO L225 Difference]: With dead ends: 4952 [2018-12-09 11:28:17,440 INFO L226 Difference]: Without dead ends: 2756 [2018-12-09 11:28:17,440 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 [2018-12-09 11:28:17,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2018-12-09 11:28:17,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2756. [2018-12-09 11:28:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2756 states. [2018-12-09 11:28:17,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 10203 transitions. [2018-12-09 11:28:17,503 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 10203 transitions. Word has length 38 [2018-12-09 11:28:17,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:28:17,503 INFO L480 AbstractCegarLoop]: Abstraction has 2756 states and 10203 transitions. [2018-12-09 11:28:17,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 11:28:17,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 10203 transitions. [2018-12-09 11:28:17,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 11:28:17,506 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:28:17,506 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] [2018-12-09 11:28:17,507 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:28:17,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:28:17,507 INFO L82 PathProgramCache]: Analyzing trace with hash -894920831, now seen corresponding path program 3 times [2018-12-09 11:28:17,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:28:17,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:17,508 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:28:17,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:17,508 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:28:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:28:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:28:17,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:28:17,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 11:28:17,559 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:28:17,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 11:28:17,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 11:28:17,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 11:28:17,560 INFO L87 Difference]: Start difference. First operand 2756 states and 10203 transitions. Second operand 7 states. [2018-12-09 11:28:17,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:28:17,631 INFO L93 Difference]: Finished difference Result 4612 states and 17131 transitions. [2018-12-09 11:28:17,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 11:28:17,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-12-09 11:28:17,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:28:17,640 INFO L225 Difference]: With dead ends: 4612 [2018-12-09 11:28:17,640 INFO L226 Difference]: Without dead ends: 2576 [2018-12-09 11:28:17,641 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 [2018-12-09 11:28:17,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2018-12-09 11:28:17,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2576. [2018-12-09 11:28:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2576 states. [2018-12-09 11:28:17,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 9591 transitions. [2018-12-09 11:28:17,685 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 9591 transitions. Word has length 38 [2018-12-09 11:28:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:28:17,685 INFO L480 AbstractCegarLoop]: Abstraction has 2576 states and 9591 transitions. [2018-12-09 11:28:17,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 11:28:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 9591 transitions. [2018-12-09 11:28:17,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 11:28:17,688 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:28:17,688 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] [2018-12-09 11:28:17,688 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:28:17,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:28:17,688 INFO L82 PathProgramCache]: Analyzing trace with hash 358548407, now seen corresponding path program 4 times [2018-12-09 11:28:17,688 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:28:17,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:17,689 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 11:28:17,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:28:17,690 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:28:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:28:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:28:17,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:28:17,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 11:28:17,735 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:28:17,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 11:28:17,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 11:28:17,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 11:28:17,736 INFO L87 Difference]: Start difference. First operand 2576 states and 9591 transitions. Second operand 7 states. [2018-12-09 11:28:17,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:28:17,785 INFO L93 Difference]: Finished difference Result 2064 states and 7543 transitions. [2018-12-09 11:28:17,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 11:28:17,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-12-09 11:28:17,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:28:17,785 INFO L225 Difference]: With dead ends: 2064 [2018-12-09 11:28:17,785 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 11:28:17,785 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 [2018-12-09 11:28:17,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 11:28:17,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 11:28:17,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 11:28:17,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 11:28:17,786 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2018-12-09 11:28:17,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:28:17,786 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 11:28:17,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 11:28:17,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 11:28:17,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 11:28:17,788 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-09 11:28:17,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:28:17 BasicIcfg [2018-12-09 11:28:17,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 11:28:17,789 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 11:28:17,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 11:28:17,789 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 11:28:17,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:28:15" (3/4) ... [2018-12-09 11:28:17,792 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 11:28:17,796 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2018-12-09 11:28:17,796 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2018-12-09 11:28:17,796 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2018-12-09 11:28:17,796 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2018-12-09 11:28:17,799 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-12-09 11:28:17,799 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 11:28:17,823 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b93a6ce6-ba7b-47b3-864e-7af934c6c65b/bin-2019/utaipan/witness.graphml [2018-12-09 11:28:17,823 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 11:28:17,824 INFO L168 Benchmark]: Toolchain (without parser) took 3317.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.7 MB). Free memory was 947.0 MB in the beginning and 971.7 MB in the end (delta: -24.7 MB). Peak memory consumption was 153.1 MB. Max. memory is 11.5 GB. [2018-12-09 11:28:17,825 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:28:17,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -141.0 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2018-12-09 11:28:17,825 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 11:28:17,825 INFO L168 Benchmark]: Boogie Preprocessor took 14.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 11:28:17,825 INFO L168 Benchmark]: RCFGBuilder took 187.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2018-12-09 11:28:17,826 INFO L168 Benchmark]: TraceAbstraction took 2711.80 ms. Allocated memory was 1.1 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 971.7 MB in the end (delta: 89.1 MB). Peak memory consumption was 158.8 MB. Max. memory is 11.5 GB. [2018-12-09 11:28:17,826 INFO L168 Benchmark]: Witness Printer took 33.96 ms. Allocated memory is still 1.2 GB. Free memory is still 971.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:28:17,827 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 341.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -141.0 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 187.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2711.80 ms. Allocated memory was 1.1 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 971.7 MB in the end (delta: 89.1 MB). Peak memory consumption was 158.8 MB. Max. memory is 11.5 GB. * Witness Printer took 33.96 ms. Allocated memory is still 1.2 GB. Free memory is still 971.7 MB. 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, 2.6s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 566 SDtfs, 883 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, 0.3s 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: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s 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...