./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/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 bb19220a89a4de9b41ceda2b5f420af7272fc928 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 19:32:52,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:32:52,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:32:52,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:32:52,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:32:52,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:32:52,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:32:52,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:32:52,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:32:52,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:32:52,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:32:52,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:32:52,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:32:52,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:32:52,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:32:52,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:32:52,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:32:52,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:32:52,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:32:52,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:32:52,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:32:52,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:32:52,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:32:52,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:32:52,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:32:52,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:32:52,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:32:52,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:32:52,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:32:52,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:32:52,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:32:52,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:32:52,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:32:52,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:32:52,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:32:52,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:32:52,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:32:52,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:32:52,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:32:52,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:32:52,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:32:52,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 19:32:52,506 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:32:52,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:32:52,507 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:32:52,507 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:32:52,507 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:32:52,507 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:32:52,507 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 19:32:52,508 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:32:52,508 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:32:52,508 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 19:32:52,508 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 19:32:52,508 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:32:52,508 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 19:32:52,509 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 19:32:52,509 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 19:32:52,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:32:52,509 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:32:52,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:32:52,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:32:52,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:32:52,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:32:52,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:32:52,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:32:52,510 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:32:52,511 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:32:52,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:32:52,511 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:32:52,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:32:52,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:32:52,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:32:52,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:32:52,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:32:52,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:32:52,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:32:52,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:32:52,513 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 19:32:52,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:32:52,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:32:52,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:32:52,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:32:52,513 INFO L138 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/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/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 -> bb19220a89a4de9b41ceda2b5f420af7272fc928 [2019-12-07 19:32:52,612 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:32:52,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:32:52,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:32:52,624 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:32:52,624 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:32:52,625 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c [2019-12-07 19:32:52,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/utaipan/data/23484c3ff/f409ed63bebd4a8c82dff653e1ecc178/FLAG0463666b6 [2019-12-07 19:32:53,082 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:32:53,083 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-1a.c [2019-12-07 19:32:53,090 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/utaipan/data/23484c3ff/f409ed63bebd4a8c82dff653e1ecc178/FLAG0463666b6 [2019-12-07 19:32:53,099 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/utaipan/data/23484c3ff/f409ed63bebd4a8c82dff653e1ecc178 [2019-12-07 19:32:53,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:32:53,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:32:53,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:32:53,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:32:53,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:32:53,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:32:53" (1/1) ... [2019-12-07 19:32:53,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c96923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:53, skipping insertion in model container [2019-12-07 19:32:53,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:32:53" (1/1) ... [2019-12-07 19:32:53,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:32:53,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:32:53,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:32:53,306 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:32:53,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:32:53,350 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:32:53,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:53 WrapperNode [2019-12-07 19:32:53,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:32:53,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:32:53,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:32:53,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:32:53,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:53" (1/1) ... [2019-12-07 19:32:53,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:53" (1/1) ... [2019-12-07 19:32:53,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:32:53,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:32:53,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:32:53,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:32:53,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:53" (1/1) ... [2019-12-07 19:32:53,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:53" (1/1) ... [2019-12-07 19:32:53,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:53" (1/1) ... [2019-12-07 19:32:53,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:53" (1/1) ... [2019-12-07 19:32:53,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:53" (1/1) ... [2019-12-07 19:32:53,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:53" (1/1) ... [2019-12-07 19:32:53,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:53" (1/1) ... [2019-12-07 19:32:53,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:32:53,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:32:53,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:32:53,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:32:53,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/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 [2019-12-07 19:32:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:32:53,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:32:53,517 WARN L738 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-12-07 19:32:53,781 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2019-12-07 19:32:53,781 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2019-12-07 19:32:54,004 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:32:54,004 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 19:32:54,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:32:54 BoogieIcfgContainer [2019-12-07 19:32:54,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:32:54,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:32:54,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:32:54,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:32:54,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:32:53" (1/3) ... [2019-12-07 19:32:54,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2318de27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:32:54, skipping insertion in model container [2019-12-07 19:32:54,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:53" (2/3) ... [2019-12-07 19:32:54,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2318de27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:32:54, skipping insertion in model container [2019-12-07 19:32:54,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:32:54" (3/3) ... [2019-12-07 19:32:54,012 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-1a.c [2019-12-07 19:32:54,020 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:32:54,027 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 19:32:54,035 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 19:32:54,050 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:32:54,050 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:32:54,050 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:32:54,050 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:32:54,050 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:32:54,051 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:32:54,051 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:32:54,051 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:32:54,062 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2019-12-07 19:32:54,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 19:32:54,066 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:54,067 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:32:54,067 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:54,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:54,071 INFO L82 PathProgramCache]: Analyzing trace with hash -783720474, now seen corresponding path program 1 times [2019-12-07 19:32:54,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:32:54,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946860234] [2019-12-07 19:32:54,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:32:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:54,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946860234] [2019-12-07 19:32:54,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:54,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 19:32:54,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118788974] [2019-12-07 19:32:54,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:32:54,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:32:54,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:32:54,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:32:54,198 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2019-12-07 19:32:54,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:54,294 INFO L93 Difference]: Finished difference Result 169 states and 293 transitions. [2019-12-07 19:32:54,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:32:54,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-07 19:32:54,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:54,303 INFO L225 Difference]: With dead ends: 169 [2019-12-07 19:32:54,303 INFO L226 Difference]: Without dead ends: 83 [2019-12-07 19:32:54,306 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:32:54,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-12-07 19:32:54,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-12-07 19:32:54,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-12-07 19:32:54,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2019-12-07 19:32:54,341 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 19 [2019-12-07 19:32:54,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:54,341 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2019-12-07 19:32:54,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:32:54,341 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2019-12-07 19:32:54,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 19:32:54,342 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:54,342 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:32:54,342 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:54,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:54,343 INFO L82 PathProgramCache]: Analyzing trace with hash -476794354, now seen corresponding path program 1 times [2019-12-07 19:32:54,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:32:54,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951481798] [2019-12-07 19:32:54,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:32:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:54,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951481798] [2019-12-07 19:32:54,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:54,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:32:54,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968394831] [2019-12-07 19:32:54,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:32:54,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:32:54,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:32:54,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:32:54,393 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand 3 states. [2019-12-07 19:32:54,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:54,473 INFO L93 Difference]: Finished difference Result 178 states and 261 transitions. [2019-12-07 19:32:54,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:32:54,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-12-07 19:32:54,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:54,475 INFO L225 Difference]: With dead ends: 178 [2019-12-07 19:32:54,475 INFO L226 Difference]: Without dead ends: 98 [2019-12-07 19:32:54,476 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:32:54,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-12-07 19:32:54,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2019-12-07 19:32:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-12-07 19:32:54,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2019-12-07 19:32:54,482 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 28 [2019-12-07 19:32:54,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:54,482 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2019-12-07 19:32:54,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:32:54,482 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2019-12-07 19:32:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-07 19:32:54,483 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:54,483 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:32:54,483 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:54,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:54,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1180380277, now seen corresponding path program 1 times [2019-12-07 19:32:54,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:32:54,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468684352] [2019-12-07 19:32:54,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:32:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:54,520 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 19:32:54,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468684352] [2019-12-07 19:32:54,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:54,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:32:54,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755364617] [2019-12-07 19:32:54,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:32:54,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:32:54,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:32:54,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:32:54,521 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand 3 states. [2019-12-07 19:32:54,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:54,606 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2019-12-07 19:32:54,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:32:54,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-12-07 19:32:54,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:54,608 INFO L225 Difference]: With dead ends: 206 [2019-12-07 19:32:54,608 INFO L226 Difference]: Without dead ends: 113 [2019-12-07 19:32:54,609 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:32:54,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-12-07 19:32:54,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2019-12-07 19:32:54,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-12-07 19:32:54,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2019-12-07 19:32:54,615 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 39 [2019-12-07 19:32:54,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:54,616 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2019-12-07 19:32:54,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:32:54,616 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2019-12-07 19:32:54,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-12-07 19:32:54,617 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:54,617 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:32:54,617 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:54,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:54,618 INFO L82 PathProgramCache]: Analyzing trace with hash 261988719, now seen corresponding path program 1 times [2019-12-07 19:32:54,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:32:54,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724473500] [2019-12-07 19:32:54,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:32:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:54,687 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 19:32:54,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724473500] [2019-12-07 19:32:54,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390230958] [2019-12-07 19:32:54,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:32:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:54,735 INFO L264 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 19:32:54,741 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:32:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 19:32:54,760 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:32:54,775 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 19:32:54,775 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 19:32:54,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 19:32:54,813 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-12-07 19:32:54,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1884912906] [2019-12-07 19:32:54,833 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2019-12-07 19:32:54,833 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:32:54,838 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 19:32:54,842 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 19:32:54,843 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 19:32:56,251 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 19:32:56,480 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2019-12-07 19:32:56,708 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2019-12-07 19:32:56,950 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 110 [2019-12-07 19:32:57,190 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2019-12-07 19:32:57,451 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2019-12-07 19:32:57,759 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 125 [2019-12-07 19:32:58,116 WARN L192 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 117 [2019-12-07 19:32:58,371 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 104 [2019-12-07 19:32:58,643 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 106 [2019-12-07 19:32:58,915 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2019-12-07 19:32:59,235 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2019-12-07 19:32:59,565 WARN L192 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114 [2019-12-07 19:32:59,837 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 117 [2019-12-07 19:33:00,122 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2019-12-07 19:33:00,780 WARN L192 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 122 [2019-12-07 19:33:01,391 WARN L192 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 121 [2019-12-07 19:33:02,157 WARN L192 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 132 [2019-12-07 19:33:03,153 WARN L192 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 135 [2019-12-07 19:33:03,920 WARN L192 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 116 [2019-12-07 19:33:04,708 WARN L192 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 118 [2019-12-07 19:33:05,483 WARN L192 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 138 [2019-12-07 19:33:06,297 WARN L192 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 141 [2019-12-07 19:33:07,165 WARN L192 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 144 [2019-12-07 19:33:08,063 WARN L192 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 147 [2019-12-07 19:33:08,921 WARN L192 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 150 [2019-12-07 19:33:09,800 WARN L192 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 153 [2019-12-07 19:33:10,618 WARN L192 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 116 [2019-12-07 19:33:11,375 WARN L192 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 114 [2019-12-07 19:33:11,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-12-07 19:33:11,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 3] total 35 [2019-12-07 19:33:11,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548251323] [2019-12-07 19:33:11,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-12-07 19:33:11,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:33:11,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-12-07 19:33:11,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2019-12-07 19:33:11,379 INFO L87 Difference]: Start difference. First operand 111 states and 154 transitions. Second operand 30 states. [2019-12-07 19:33:11,857 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-12-07 19:33:12,072 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-12-07 19:33:12,334 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-12-07 19:33:12,545 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-12-07 19:33:12,823 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-12-07 19:33:13,048 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-12-07 19:33:13,321 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-07 19:33:13,557 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-12-07 19:33:14,275 WARN L192 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 122 [2019-12-07 19:33:14,464 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 19:33:14,640 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-12-07 19:33:14,822 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-12-07 19:33:15,466 WARN L192 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 120 [2019-12-07 19:33:15,999 WARN L192 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2019-12-07 19:33:16,549 WARN L192 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 131 [2019-12-07 19:33:16,999 WARN L192 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 112 [2019-12-07 19:33:17,558 WARN L192 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 126 [2019-12-07 19:33:18,090 WARN L192 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 129 [2019-12-07 19:33:18,586 WARN L192 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 110 [2019-12-07 19:33:18,822 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 19:33:18,977 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 19:33:19,147 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-12-07 19:33:19,335 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 19:33:19,509 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-12-07 19:33:19,735 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 19:33:20,028 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-12-07 19:33:20,271 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-12-07 19:33:20,920 WARN L192 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 134 [2019-12-07 19:33:21,562 WARN L192 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 137 [2019-12-07 19:33:22,180 WARN L192 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 140 [2019-12-07 19:33:22,834 WARN L192 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 143 [2019-12-07 19:33:23,361 WARN L192 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2019-12-07 19:33:24,084 WARN L192 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 146 [2019-12-07 19:33:24,719 WARN L192 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 135 [2019-12-07 19:33:25,318 WARN L192 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 149 [2019-12-07 19:33:25,863 WARN L192 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2019-12-07 19:33:26,356 WARN L192 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 112 [2019-12-07 19:33:26,915 WARN L192 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 141 [2019-12-07 19:33:27,535 WARN L192 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 144 [2019-12-07 19:33:28,184 WARN L192 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 147 [2019-12-07 19:33:29,021 WARN L192 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 110 [2019-12-07 19:33:29,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:33:29,671 INFO L93 Difference]: Finished difference Result 464 states and 641 transitions. [2019-12-07 19:33:29,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-12-07 19:33:29,671 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 52 [2019-12-07 19:33:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:33:29,674 INFO L225 Difference]: With dead ends: 464 [2019-12-07 19:33:29,674 INFO L226 Difference]: Without dead ends: 356 [2019-12-07 19:33:29,677 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=1263, Invalid=4743, Unknown=0, NotChecked=0, Total=6006 [2019-12-07 19:33:29,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2019-12-07 19:33:29,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 238. [2019-12-07 19:33:29,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-12-07 19:33:29,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 353 transitions. [2019-12-07 19:33:29,697 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 353 transitions. Word has length 52 [2019-12-07 19:33:29,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:33:29,698 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 353 transitions. [2019-12-07 19:33:29,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-12-07 19:33:29,698 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 353 transitions. [2019-12-07 19:33:29,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-12-07 19:33:29,699 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:33:29,700 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:33:29,900 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:33:29,901 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:33:29,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:33:29,902 INFO L82 PathProgramCache]: Analyzing trace with hash -472910457, now seen corresponding path program 1 times [2019-12-07 19:33:29,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:33:29,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274330769] [2019-12-07 19:33:29,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:33:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:33:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 19:33:29,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274330769] [2019-12-07 19:33:29,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618815913] [2019-12-07 19:33:29,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:33:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:33:30,017 INFO L264 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 19:33:30,018 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:33:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 19:33:30,027 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:33:30,060 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-12-07 19:33:30,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2089365817] [2019-12-07 19:33:30,061 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2019-12-07 19:33:30,062 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:33:30,062 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 19:33:30,062 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 19:33:30,062 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 19:33:31,048 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 19:33:31,252 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2019-12-07 19:33:31,478 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2019-12-07 19:33:31,706 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 110 [2019-12-07 19:33:31,945 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2019-12-07 19:33:32,221 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2019-12-07 19:33:32,505 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 125 [2019-12-07 19:33:32,799 WARN L192 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 117 [2019-12-07 19:33:33,032 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 104 [2019-12-07 19:33:33,274 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 106 [2019-12-07 19:33:33,640 WARN L192 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 110 [2019-12-07 19:33:34,070 WARN L192 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 113 [2019-12-07 19:33:34,497 WARN L192 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 116 [2019-12-07 19:33:34,875 WARN L192 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 119 [2019-12-07 19:33:35,274 WARN L192 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 122 [2019-12-07 19:33:35,860 WARN L192 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 122 [2019-12-07 19:33:36,719 WARN L192 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 124 [2019-12-07 19:33:36,989 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106 [2019-12-07 19:33:37,247 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2019-12-07 19:33:37,507 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 105 [2019-12-07 19:33:37,772 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 108 [2019-12-07 19:33:38,053 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2019-12-07 19:33:38,374 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 115 [2019-12-07 19:33:38,906 WARN L192 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 118 [2019-12-07 19:33:39,323 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2019-12-07 19:33:39,658 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 124 [2019-12-07 19:33:40,063 WARN L192 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 127 [2019-12-07 19:33:40,429 WARN L192 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2019-12-07 19:33:40,744 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 105 [2019-12-07 19:33:41,037 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 104 [2019-12-07 19:33:41,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-12-07 19:33:41,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [4, 4, 3] total 36 [2019-12-07 19:33:41,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396722368] [2019-12-07 19:33:41,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-12-07 19:33:41,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:33:41,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-12-07 19:33:41,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1018, Unknown=0, NotChecked=0, Total=1332 [2019-12-07 19:33:41,039 INFO L87 Difference]: Start difference. First operand 238 states and 353 transitions. Second operand 31 states. [2019-12-07 19:33:41,251 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-12-07 19:33:41,558 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 19:33:41,837 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2019-12-07 19:33:42,117 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2019-12-07 19:33:42,398 WARN L192 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2019-12-07 19:33:42,559 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-12-07 19:33:42,881 WARN L192 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2019-12-07 19:33:43,119 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2019-12-07 19:33:43,409 WARN L192 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 124 [2019-12-07 19:33:43,696 WARN L192 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2019-12-07 19:33:44,308 WARN L192 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 122 [2019-12-07 19:33:44,580 WARN L192 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2019-12-07 19:33:44,852 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2019-12-07 19:33:45,018 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-12-07 19:33:45,327 WARN L192 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2019-12-07 19:33:45,489 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 19:33:46,123 WARN L192 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 120 [2019-12-07 19:33:46,552 WARN L192 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 111 [2019-12-07 19:33:47,027 WARN L192 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 109 [2019-12-07 19:33:47,408 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 19:33:47,635 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-12-07 19:33:47,980 WARN L192 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 139 [2019-12-07 19:33:48,149 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-12-07 19:33:48,582 WARN L192 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 142 [2019-12-07 19:33:48,769 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-12-07 19:33:49,176 WARN L192 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 145 [2019-12-07 19:33:49,350 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-12-07 19:33:50,191 WARN L192 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 148 [2019-12-07 19:33:50,358 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-12-07 19:33:50,683 WARN L192 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 137 [2019-12-07 19:33:51,014 WARN L192 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 127 [2019-12-07 19:33:51,180 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-12-07 19:33:51,520 WARN L192 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 140 [2019-12-07 19:33:52,005 WARN L192 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 130 [2019-12-07 19:33:52,175 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-12-07 19:33:52,533 WARN L192 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 143 [2019-12-07 19:33:52,912 WARN L192 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 133 [2019-12-07 19:33:53,309 WARN L192 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 146 [2019-12-07 19:33:54,097 WARN L192 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 136 [2019-12-07 19:33:54,555 WARN L192 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 125 [2019-12-07 19:33:54,943 WARN L192 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 139 [2019-12-07 19:33:55,262 WARN L192 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 128 [2019-12-07 19:33:55,644 WARN L192 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 142 [2019-12-07 19:33:55,969 WARN L192 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 131 [2019-12-07 19:33:56,394 WARN L192 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 145 [2019-12-07 19:33:56,770 WARN L192 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 134 [2019-12-07 19:33:57,182 WARN L192 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 148 [2019-12-07 19:33:57,581 WARN L192 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 137 [2019-12-07 19:33:57,996 WARN L192 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 151 [2019-12-07 19:33:58,362 WARN L192 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 140 [2019-12-07 19:33:58,752 WARN L192 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 111 [2019-12-07 19:33:59,122 WARN L192 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 143 [2019-12-07 19:33:59,598 WARN L192 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 146 [2019-12-07 19:34:00,155 WARN L192 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 149 [2019-12-07 19:34:00,600 WARN L192 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-12-07 19:34:00,981 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 109 [2019-12-07 19:34:01,167 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 19:34:01,504 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-12-07 19:34:02,138 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-07 19:34:02,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:34:02,759 INFO L93 Difference]: Finished difference Result 833 states and 1193 transitions. [2019-12-07 19:34:02,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2019-12-07 19:34:02,759 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 53 [2019-12-07 19:34:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:34:02,763 INFO L225 Difference]: With dead ends: 833 [2019-12-07 19:34:02,763 INFO L226 Difference]: Without dead ends: 725 [2019-12-07 19:34:02,766 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2373 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=1915, Invalid=7205, Unknown=0, NotChecked=0, Total=9120 [2019-12-07 19:34:02,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2019-12-07 19:34:02,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 525. [2019-12-07 19:34:02,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2019-12-07 19:34:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 796 transitions. [2019-12-07 19:34:02,791 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 796 transitions. Word has length 53 [2019-12-07 19:34:02,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:34:02,791 INFO L462 AbstractCegarLoop]: Abstraction has 525 states and 796 transitions. [2019-12-07 19:34:02,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-12-07 19:34:02,791 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 796 transitions. [2019-12-07 19:34:02,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-12-07 19:34:02,793 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:34:02,793 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:34:02,993 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:34:02,994 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:34:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:34:02,995 INFO L82 PathProgramCache]: Analyzing trace with hash -624450707, now seen corresponding path program 1 times [2019-12-07 19:34:02,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:34:02,996 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266476211] [2019-12-07 19:34:02,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:34:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 19:34:03,027 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266476211] [2019-12-07 19:34:03,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:34:03,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:34:03,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127274313] [2019-12-07 19:34:03,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:34:03,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:34:03,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:34:03,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:03,028 INFO L87 Difference]: Start difference. First operand 525 states and 796 transitions. Second operand 3 states. [2019-12-07 19:34:03,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:34:03,060 INFO L93 Difference]: Finished difference Result 1222 states and 1808 transitions. [2019-12-07 19:34:03,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:34:03,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2019-12-07 19:34:03,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:34:03,063 INFO L225 Difference]: With dead ends: 1222 [2019-12-07 19:34:03,063 INFO L226 Difference]: Without dead ends: 700 [2019-12-07 19:34:03,064 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:03,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2019-12-07 19:34:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 695. [2019-12-07 19:34:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-12-07 19:34:03,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1001 transitions. [2019-12-07 19:34:03,096 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1001 transitions. Word has length 56 [2019-12-07 19:34:03,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:34:03,096 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 1001 transitions. [2019-12-07 19:34:03,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:34:03,096 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1001 transitions. [2019-12-07 19:34:03,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-12-07 19:34:03,097 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:34:03,097 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:34:03,097 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:34:03,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:34:03,097 INFO L82 PathProgramCache]: Analyzing trace with hash 160965101, now seen corresponding path program 2 times [2019-12-07 19:34:03,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:34:03,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737728040] [2019-12-07 19:34:03,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:34:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 19:34:03,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737728040] [2019-12-07 19:34:03,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:34:03,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:34:03,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357375551] [2019-12-07 19:34:03,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:34:03,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:34:03,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:34:03,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:03,115 INFO L87 Difference]: Start difference. First operand 695 states and 1001 transitions. Second operand 3 states. [2019-12-07 19:34:03,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:34:03,146 INFO L93 Difference]: Finished difference Result 1031 states and 1476 transitions. [2019-12-07 19:34:03,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:34:03,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2019-12-07 19:34:03,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:34:03,150 INFO L225 Difference]: With dead ends: 1031 [2019-12-07 19:34:03,150 INFO L226 Difference]: Without dead ends: 705 [2019-12-07 19:34:03,150 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:03,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2019-12-07 19:34:03,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 703. [2019-12-07 19:34:03,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2019-12-07 19:34:03,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 998 transitions. [2019-12-07 19:34:03,183 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 998 transitions. Word has length 56 [2019-12-07 19:34:03,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:34:03,183 INFO L462 AbstractCegarLoop]: Abstraction has 703 states and 998 transitions. [2019-12-07 19:34:03,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:34:03,183 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 998 transitions. [2019-12-07 19:34:03,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-12-07 19:34:03,184 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:34:03,184 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:34:03,184 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:34:03,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:34:03,184 INFO L82 PathProgramCache]: Analyzing trace with hash -930500657, now seen corresponding path program 1 times [2019-12-07 19:34:03,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:34:03,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600861328] [2019-12-07 19:34:03,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:34:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 19:34:03,201 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600861328] [2019-12-07 19:34:03,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:34:03,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:34:03,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002763524] [2019-12-07 19:34:03,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:34:03,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:34:03,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:34:03,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:03,202 INFO L87 Difference]: Start difference. First operand 703 states and 998 transitions. Second operand 3 states. [2019-12-07 19:34:03,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:34:03,247 INFO L93 Difference]: Finished difference Result 818 states and 1154 transitions. [2019-12-07 19:34:03,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:34:03,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-12-07 19:34:03,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:34:03,251 INFO L225 Difference]: With dead ends: 818 [2019-12-07 19:34:03,251 INFO L226 Difference]: Without dead ends: 710 [2019-12-07 19:34:03,252 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:03,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2019-12-07 19:34:03,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 706. [2019-12-07 19:34:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-12-07 19:34:03,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 999 transitions. [2019-12-07 19:34:03,287 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 999 transitions. Word has length 58 [2019-12-07 19:34:03,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:34:03,287 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 999 transitions. [2019-12-07 19:34:03,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:34:03,287 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 999 transitions. [2019-12-07 19:34:03,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-12-07 19:34:03,288 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:34:03,288 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:34:03,288 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:34:03,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:34:03,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1448337199, now seen corresponding path program 1 times [2019-12-07 19:34:03,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:34:03,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351784701] [2019-12-07 19:34:03,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:34:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 19:34:03,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351784701] [2019-12-07 19:34:03,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:34:03,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:34:03,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556093957] [2019-12-07 19:34:03,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:34:03,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:34:03,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:34:03,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:03,309 INFO L87 Difference]: Start difference. First operand 706 states and 999 transitions. Second operand 3 states. [2019-12-07 19:34:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:34:03,339 INFO L93 Difference]: Finished difference Result 927 states and 1297 transitions. [2019-12-07 19:34:03,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:34:03,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2019-12-07 19:34:03,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:34:03,343 INFO L225 Difference]: With dead ends: 927 [2019-12-07 19:34:03,343 INFO L226 Difference]: Without dead ends: 816 [2019-12-07 19:34:03,343 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:03,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2019-12-07 19:34:03,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 814. [2019-12-07 19:34:03,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2019-12-07 19:34:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1134 transitions. [2019-12-07 19:34:03,376 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1134 transitions. Word has length 62 [2019-12-07 19:34:03,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:34:03,377 INFO L462 AbstractCegarLoop]: Abstraction has 814 states and 1134 transitions. [2019-12-07 19:34:03,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:34:03,377 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1134 transitions. [2019-12-07 19:34:03,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-12-07 19:34:03,378 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:34:03,378 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:34:03,378 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:34:03,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:34:03,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1755748855, now seen corresponding path program 2 times [2019-12-07 19:34:03,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:34:03,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998097406] [2019-12-07 19:34:03,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:34:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-12-07 19:34:03,394 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998097406] [2019-12-07 19:34:03,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:34:03,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:34:03,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419739260] [2019-12-07 19:34:03,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:34:03,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:34:03,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:34:03,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:03,395 INFO L87 Difference]: Start difference. First operand 814 states and 1134 transitions. Second operand 3 states. [2019-12-07 19:34:03,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:34:03,438 INFO L93 Difference]: Finished difference Result 924 states and 1278 transitions. [2019-12-07 19:34:03,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:34:03,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2019-12-07 19:34:03,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:34:03,442 INFO L225 Difference]: With dead ends: 924 [2019-12-07 19:34:03,442 INFO L226 Difference]: Without dead ends: 816 [2019-12-07 19:34:03,443 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:03,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2019-12-07 19:34:03,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 814. [2019-12-07 19:34:03,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2019-12-07 19:34:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1131 transitions. [2019-12-07 19:34:03,476 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1131 transitions. Word has length 62 [2019-12-07 19:34:03,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:34:03,476 INFO L462 AbstractCegarLoop]: Abstraction has 814 states and 1131 transitions. [2019-12-07 19:34:03,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:34:03,476 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1131 transitions. [2019-12-07 19:34:03,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-12-07 19:34:03,477 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:34:03,477 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:34:03,477 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:34:03,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:34:03,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1998319021, now seen corresponding path program 1 times [2019-12-07 19:34:03,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:34:03,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229077468] [2019-12-07 19:34:03,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:34:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 19:34:03,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229077468] [2019-12-07 19:34:03,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306502065] [2019-12-07 19:34:03,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:34:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:03,549 INFO L264 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 19:34:03,550 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:34:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 19:34:03,560 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:34:03,594 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-12-07 19:34:03,594 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [513850209] [2019-12-07 19:34:03,595 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2019-12-07 19:34:03,596 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:34:03,596 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 19:34:03,596 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 19:34:03,596 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 19:34:04,768 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 19:34:04,994 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 103 [2019-12-07 19:34:05,200 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2019-12-07 19:34:05,403 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103 [2019-12-07 19:34:05,623 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2019-12-07 19:34:05,852 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 110 [2019-12-07 19:34:06,116 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2019-12-07 19:34:06,396 WARN L192 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 123 [2019-12-07 19:34:06,734 WARN L192 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 115 [2019-12-07 19:34:07,006 WARN L192 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2019-12-07 19:34:07,280 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101 [2019-12-07 19:34:07,540 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 102 [2019-12-07 19:34:07,884 WARN L192 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2019-12-07 19:34:08,262 WARN L192 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 109 [2019-12-07 19:34:08,612 WARN L192 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 107 [2019-12-07 19:34:08,983 WARN L192 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 110 [2019-12-07 19:34:09,484 WARN L192 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 113 [2019-12-07 19:34:09,872 WARN L192 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 116 [2019-12-07 19:34:10,272 WARN L192 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 119 [2019-12-07 19:34:10,751 WARN L192 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 121 [2019-12-07 19:34:11,306 WARN L192 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 123 [2019-12-07 19:34:11,565 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104 [2019-12-07 19:34:11,840 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107 [2019-12-07 19:34:12,160 WARN L192 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 103 [2019-12-07 19:34:12,459 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 109 [2019-12-07 19:34:12,755 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 110 [2019-12-07 19:34:13,060 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 113 [2019-12-07 19:34:13,399 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 116 [2019-12-07 19:34:13,760 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2019-12-07 19:34:14,333 WARN L192 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2019-12-07 19:34:14,704 WARN L192 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 125 [2019-12-07 19:34:15,015 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 103 [2019-12-07 19:34:15,302 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 102 [2019-12-07 19:34:15,304 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:34:15,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 19:34:15,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2019-12-07 19:34:15,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547432251] [2019-12-07 19:34:15,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 19:34:15,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:34:15,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 19:34:15,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1332, Unknown=0, NotChecked=0, Total=1560 [2019-12-07 19:34:15,306 INFO L87 Difference]: Start difference. First operand 814 states and 1131 transitions. Second operand 8 states. [2019-12-07 19:34:15,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:34:15,431 INFO L93 Difference]: Finished difference Result 2108 states and 2852 transitions. [2019-12-07 19:34:15,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 19:34:15,431 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2019-12-07 19:34:15,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:34:15,439 INFO L225 Difference]: With dead ends: 2108 [2019-12-07 19:34:15,439 INFO L226 Difference]: Without dead ends: 2106 [2019-12-07 19:34:15,440 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=228, Invalid=1332, Unknown=0, NotChecked=0, Total=1560 [2019-12-07 19:34:15,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2019-12-07 19:34:15,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1317. [2019-12-07 19:34:15,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2019-12-07 19:34:15,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1811 transitions. [2019-12-07 19:34:15,482 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1811 transitions. Word has length 64 [2019-12-07 19:34:15,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:34:15,483 INFO L462 AbstractCegarLoop]: Abstraction has 1317 states and 1811 transitions. [2019-12-07 19:34:15,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 19:34:15,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1811 transitions. [2019-12-07 19:34:15,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-12-07 19:34:15,484 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:34:15,484 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:34:15,685 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:34:15,685 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:34:15,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:34:15,685 INFO L82 PathProgramCache]: Analyzing trace with hash -608457600, now seen corresponding path program 1 times [2019-12-07 19:34:15,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:34:15,686 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592029346] [2019-12-07 19:34:15,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:34:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-12-07 19:34:15,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592029346] [2019-12-07 19:34:15,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:34:15,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:34:15,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944118107] [2019-12-07 19:34:15,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:34:15,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:34:15,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:34:15,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:15,713 INFO L87 Difference]: Start difference. First operand 1317 states and 1811 transitions. Second operand 3 states. [2019-12-07 19:34:15,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:34:15,879 INFO L93 Difference]: Finished difference Result 3182 states and 4584 transitions. [2019-12-07 19:34:15,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:34:15,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2019-12-07 19:34:15,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:34:15,889 INFO L225 Difference]: With dead ends: 3182 [2019-12-07 19:34:15,890 INFO L226 Difference]: Without dead ends: 1864 [2019-12-07 19:34:15,892 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:15,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2019-12-07 19:34:15,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1755. [2019-12-07 19:34:15,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2019-12-07 19:34:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2487 transitions. [2019-12-07 19:34:15,946 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2487 transitions. Word has length 99 [2019-12-07 19:34:15,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:34:15,946 INFO L462 AbstractCegarLoop]: Abstraction has 1755 states and 2487 transitions. [2019-12-07 19:34:15,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:34:15,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2487 transitions. [2019-12-07 19:34:15,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-12-07 19:34:15,948 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:34:15,949 INFO L410 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:34:15,949 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:34:15,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:34:15,949 INFO L82 PathProgramCache]: Analyzing trace with hash -2096574725, now seen corresponding path program 2 times [2019-12-07 19:34:15,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:34:15,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726406326] [2019-12-07 19:34:15,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:34:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-12-07 19:34:15,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726406326] [2019-12-07 19:34:15,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:34:15,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:34:15,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896674962] [2019-12-07 19:34:15,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:34:15,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:34:15,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:34:15,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:15,982 INFO L87 Difference]: Start difference. First operand 1755 states and 2487 transitions. Second operand 3 states. [2019-12-07 19:34:16,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:34:16,149 INFO L93 Difference]: Finished difference Result 4192 states and 6144 transitions. [2019-12-07 19:34:16,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:34:16,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-12-07 19:34:16,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:34:16,158 INFO L225 Difference]: With dead ends: 4192 [2019-12-07 19:34:16,158 INFO L226 Difference]: Without dead ends: 2489 [2019-12-07 19:34:16,160 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:16,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2019-12-07 19:34:16,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2365. [2019-12-07 19:34:16,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2365 states. [2019-12-07 19:34:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 3229 transitions. [2019-12-07 19:34:16,224 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 3229 transitions. Word has length 119 [2019-12-07 19:34:16,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:34:16,225 INFO L462 AbstractCegarLoop]: Abstraction has 2365 states and 3229 transitions. [2019-12-07 19:34:16,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:34:16,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 3229 transitions. [2019-12-07 19:34:16,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-12-07 19:34:16,228 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:34:16,228 INFO L410 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 8, 8, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:34:16,228 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:34:16,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:34:16,228 INFO L82 PathProgramCache]: Analyzing trace with hash 241137358, now seen corresponding path program 1 times [2019-12-07 19:34:16,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:34:16,228 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645917248] [2019-12-07 19:34:16,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:34:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-12-07 19:34:16,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645917248] [2019-12-07 19:34:16,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:34:16,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:34:16,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131710354] [2019-12-07 19:34:16,258 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:34:16,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:34:16,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:34:16,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:16,258 INFO L87 Difference]: Start difference. First operand 2365 states and 3229 transitions. Second operand 3 states. [2019-12-07 19:34:16,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:34:16,422 INFO L93 Difference]: Finished difference Result 5157 states and 7073 transitions. [2019-12-07 19:34:16,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:34:16,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2019-12-07 19:34:16,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:34:16,432 INFO L225 Difference]: With dead ends: 5157 [2019-12-07 19:34:16,432 INFO L226 Difference]: Without dead ends: 2670 [2019-12-07 19:34:16,435 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:16,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2019-12-07 19:34:16,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2557. [2019-12-07 19:34:16,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2557 states. [2019-12-07 19:34:16,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 3433 transitions. [2019-12-07 19:34:16,498 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 3433 transitions. Word has length 139 [2019-12-07 19:34:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:34:16,498 INFO L462 AbstractCegarLoop]: Abstraction has 2557 states and 3433 transitions. [2019-12-07 19:34:16,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:34:16,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 3433 transitions. [2019-12-07 19:34:16,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-12-07 19:34:16,501 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:34:16,502 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:34:16,502 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:34:16,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:34:16,502 INFO L82 PathProgramCache]: Analyzing trace with hash 215593848, now seen corresponding path program 1 times [2019-12-07 19:34:16,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:34:16,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854287908] [2019-12-07 19:34:16,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:34:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2019-12-07 19:34:16,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854287908] [2019-12-07 19:34:16,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:34:16,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:34:16,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290470863] [2019-12-07 19:34:16,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:34:16,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:34:16,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:34:16,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:16,540 INFO L87 Difference]: Start difference. First operand 2557 states and 3433 transitions. Second operand 3 states. [2019-12-07 19:34:16,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:34:16,718 INFO L93 Difference]: Finished difference Result 5458 states and 7390 transitions. [2019-12-07 19:34:16,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:34:16,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2019-12-07 19:34:16,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:34:16,730 INFO L225 Difference]: With dead ends: 5458 [2019-12-07 19:34:16,730 INFO L226 Difference]: Without dead ends: 2998 [2019-12-07 19:34:16,733 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:16,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2019-12-07 19:34:16,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2885. [2019-12-07 19:34:16,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2885 states. [2019-12-07 19:34:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2885 states to 2885 states and 3857 transitions. [2019-12-07 19:34:16,803 INFO L78 Accepts]: Start accepts. Automaton has 2885 states and 3857 transitions. Word has length 160 [2019-12-07 19:34:16,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:34:16,803 INFO L462 AbstractCegarLoop]: Abstraction has 2885 states and 3857 transitions. [2019-12-07 19:34:16,803 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:34:16,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2885 states and 3857 transitions. [2019-12-07 19:34:16,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-12-07 19:34:16,807 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:34:16,807 INFO L410 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 10, 10, 8, 8, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:34:16,807 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:34:16,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:34:16,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1297556163, now seen corresponding path program 1 times [2019-12-07 19:34:16,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:34:16,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697049760] [2019-12-07 19:34:16,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:34:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:16,846 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2019-12-07 19:34:16,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697049760] [2019-12-07 19:34:16,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:34:16,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:34:16,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720095998] [2019-12-07 19:34:16,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:34:16,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:34:16,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:34:16,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:16,848 INFO L87 Difference]: Start difference. First operand 2885 states and 3857 transitions. Second operand 3 states. [2019-12-07 19:34:17,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:34:17,034 INFO L93 Difference]: Finished difference Result 6550 states and 9046 transitions. [2019-12-07 19:34:17,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:34:17,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2019-12-07 19:34:17,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:34:17,054 INFO L225 Difference]: With dead ends: 6550 [2019-12-07 19:34:17,054 INFO L226 Difference]: Without dead ends: 3810 [2019-12-07 19:34:17,057 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:17,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2019-12-07 19:34:17,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3637. [2019-12-07 19:34:17,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3637 states. [2019-12-07 19:34:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3637 states to 3637 states and 5029 transitions. [2019-12-07 19:34:17,156 INFO L78 Accepts]: Start accepts. Automaton has 3637 states and 5029 transitions. Word has length 187 [2019-12-07 19:34:17,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:34:17,157 INFO L462 AbstractCegarLoop]: Abstraction has 3637 states and 5029 transitions. [2019-12-07 19:34:17,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:34:17,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3637 states and 5029 transitions. [2019-12-07 19:34:17,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-12-07 19:34:17,161 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:34:17,161 INFO L410 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:34:17,161 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:34:17,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:34:17,162 INFO L82 PathProgramCache]: Analyzing trace with hash -13933003, now seen corresponding path program 1 times [2019-12-07 19:34:17,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:34:17,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409103602] [2019-12-07 19:34:17,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:34:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2019-12-07 19:34:17,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409103602] [2019-12-07 19:34:17,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:34:17,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:34:17,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656867825] [2019-12-07 19:34:17,215 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:34:17,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:34:17,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:34:17,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:17,215 INFO L87 Difference]: Start difference. First operand 3637 states and 5029 transitions. Second operand 3 states. [2019-12-07 19:34:17,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:34:17,386 INFO L93 Difference]: Finished difference Result 7182 states and 9906 transitions. [2019-12-07 19:34:17,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:34:17,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2019-12-07 19:34:17,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:34:17,401 INFO L225 Difference]: With dead ends: 7182 [2019-12-07 19:34:17,401 INFO L226 Difference]: Without dead ends: 3714 [2019-12-07 19:34:17,404 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:17,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2019-12-07 19:34:17,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3601. [2019-12-07 19:34:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3601 states. [2019-12-07 19:34:17,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 4921 transitions. [2019-12-07 19:34:17,490 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 4921 transitions. Word has length 220 [2019-12-07 19:34:17,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:34:17,490 INFO L462 AbstractCegarLoop]: Abstraction has 3601 states and 4921 transitions. [2019-12-07 19:34:17,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:34:17,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 4921 transitions. [2019-12-07 19:34:17,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-12-07 19:34:17,495 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:34:17,495 INFO L410 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:34:17,495 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:34:17,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:34:17,496 INFO L82 PathProgramCache]: Analyzing trace with hash -379868055, now seen corresponding path program 1 times [2019-12-07 19:34:17,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:34:17,496 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352321160] [2019-12-07 19:34:17,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:34:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2019-12-07 19:34:17,556 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352321160] [2019-12-07 19:34:17,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:34:17,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:34:17,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453148040] [2019-12-07 19:34:17,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:34:17,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:34:17,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:34:17,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:17,557 INFO L87 Difference]: Start difference. First operand 3601 states and 4921 transitions. Second operand 3 states. [2019-12-07 19:34:17,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:34:17,728 INFO L93 Difference]: Finished difference Result 7518 states and 10230 transitions. [2019-12-07 19:34:17,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:34:17,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2019-12-07 19:34:17,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:34:17,744 INFO L225 Difference]: With dead ends: 7518 [2019-12-07 19:34:17,744 INFO L226 Difference]: Without dead ends: 4122 [2019-12-07 19:34:17,747 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:17,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2019-12-07 19:34:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 3829. [2019-12-07 19:34:17,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3829 states. [2019-12-07 19:34:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3829 states to 3829 states and 5173 transitions. [2019-12-07 19:34:17,828 INFO L78 Accepts]: Start accepts. Automaton has 3829 states and 5173 transitions. Word has length 233 [2019-12-07 19:34:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:34:17,829 INFO L462 AbstractCegarLoop]: Abstraction has 3829 states and 5173 transitions. [2019-12-07 19:34:17,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:34:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3829 states and 5173 transitions. [2019-12-07 19:34:17,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2019-12-07 19:34:17,834 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:34:17,834 INFO L410 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 12, 12, 12, 10, 10, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:34:17,834 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:34:17,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:34:17,834 INFO L82 PathProgramCache]: Analyzing trace with hash -469414061, now seen corresponding path program 1 times [2019-12-07 19:34:17,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:34:17,834 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290902524] [2019-12-07 19:34:17,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:34:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2019-12-07 19:34:17,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290902524] [2019-12-07 19:34:17,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:34:17,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:34:17,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368345618] [2019-12-07 19:34:17,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:34:17,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:34:17,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:34:17,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:17,896 INFO L87 Difference]: Start difference. First operand 3829 states and 5173 transitions. Second operand 3 states. [2019-12-07 19:34:18,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:34:18,061 INFO L93 Difference]: Finished difference Result 7542 states and 10170 transitions. [2019-12-07 19:34:18,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:34:18,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 255 [2019-12-07 19:34:18,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:34:18,067 INFO L225 Difference]: With dead ends: 7542 [2019-12-07 19:34:18,067 INFO L226 Difference]: Without dead ends: 3918 [2019-12-07 19:34:18,070 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:34:18,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2019-12-07 19:34:18,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3829. [2019-12-07 19:34:18,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3829 states. [2019-12-07 19:34:18,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3829 states to 3829 states and 5101 transitions. [2019-12-07 19:34:18,143 INFO L78 Accepts]: Start accepts. Automaton has 3829 states and 5101 transitions. Word has length 255 [2019-12-07 19:34:18,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:34:18,144 INFO L462 AbstractCegarLoop]: Abstraction has 3829 states and 5101 transitions. [2019-12-07 19:34:18,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:34:18,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3829 states and 5101 transitions. [2019-12-07 19:34:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2019-12-07 19:34:18,148 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:34:18,149 INFO L410 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 9, 9, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:34:18,149 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:34:18,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:34:18,149 INFO L82 PathProgramCache]: Analyzing trace with hash -566981223, now seen corresponding path program 1 times [2019-12-07 19:34:18,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:34:18,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490672995] [2019-12-07 19:34:18,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:34:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 437 proven. 11 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2019-12-07 19:34:18,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490672995] [2019-12-07 19:34:18,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059880242] [2019-12-07 19:34:18,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:34:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:34:18,324 INFO L264 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 19:34:18,328 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:34:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 437 proven. 11 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2019-12-07 19:34:18,407 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:34:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 437 proven. 11 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2019-12-07 19:34:18,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [25954405] [2019-12-07 19:34:18,462 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2019-12-07 19:34:18,463 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:34:18,463 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 19:34:18,463 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 19:34:18,464 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 19:42:20,406 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 19:42:22,371 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 14 [2019-12-07 19:42:24,393 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:42:24,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 19:42:24,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2019-12-07 19:42:24,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660221280] [2019-12-07 19:42:24,394 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 19:42:24,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:42:24,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 19:42:24,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1033, Invalid=3659, Unknown=0, NotChecked=0, Total=4692 [2019-12-07 19:42:24,395 INFO L87 Difference]: Start difference. First operand 3829 states and 5101 transitions. Second operand 8 states. [2019-12-07 19:42:24,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:42:24,768 INFO L93 Difference]: Finished difference Result 10173 states and 13654 transitions. [2019-12-07 19:42:24,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 19:42:24,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 270 [2019-12-07 19:42:24,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:42:24,776 INFO L225 Difference]: With dead ends: 10173 [2019-12-07 19:42:24,777 INFO L226 Difference]: Without dead ends: 6525 [2019-12-07 19:42:24,781 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 736 SyntacticMatches, 12 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2804 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1057, Invalid=4055, Unknown=0, NotChecked=0, Total=5112 [2019-12-07 19:42:24,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6525 states. [2019-12-07 19:42:24,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6525 to 5039. [2019-12-07 19:42:24,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5039 states. [2019-12-07 19:42:24,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5039 states to 5039 states and 6570 transitions. [2019-12-07 19:42:24,881 INFO L78 Accepts]: Start accepts. Automaton has 5039 states and 6570 transitions. Word has length 270 [2019-12-07 19:42:24,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:42:24,881 INFO L462 AbstractCegarLoop]: Abstraction has 5039 states and 6570 transitions. [2019-12-07 19:42:24,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 19:42:24,881 INFO L276 IsEmpty]: Start isEmpty. Operand 5039 states and 6570 transitions. [2019-12-07 19:42:24,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2019-12-07 19:42:24,887 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:42:24,887 INFO L410 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 11, 10, 9, 9, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:42:25,088 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:42:25,089 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:42:25,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:42:25,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1038375373, now seen corresponding path program 1 times [2019-12-07 19:42:25,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:42:25,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008789384] [2019-12-07 19:42:25,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:42:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:42:25,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2019-12-07 19:42:25,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008789384] [2019-12-07 19:42:25,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:42:25,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:42:25,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039399034] [2019-12-07 19:42:25,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:42:25,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:42:25,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:42:25,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:42:25,206 INFO L87 Difference]: Start difference. First operand 5039 states and 6570 transitions. Second operand 3 states. [2019-12-07 19:42:25,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:42:25,363 INFO L93 Difference]: Finished difference Result 8650 states and 11186 transitions. [2019-12-07 19:42:25,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:42:25,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 306 [2019-12-07 19:42:25,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:42:25,364 INFO L225 Difference]: With dead ends: 8650 [2019-12-07 19:42:25,364 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 19:42:25,369 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:42:25,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 19:42:25,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 19:42:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 19:42:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 19:42:25,369 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 306 [2019-12-07 19:42:25,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:42:25,369 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 19:42:25,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:42:25,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 19:42:25,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 19:42:25,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 19:42:26,300 WARN L192 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 394 DAG size of output: 340 [2019-12-07 19:42:26,592 WARN L192 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 395 DAG size of output: 256 [2019-12-07 19:42:26,934 WARN L192 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 423 DAG size of output: 290 [2019-12-07 19:42:27,437 WARN L192 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 435 DAG size of output: 243 [2019-12-07 19:42:29,818 WARN L192 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 338 DAG size of output: 15 [2019-12-07 19:42:30,932 WARN L192 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 251 DAG size of output: 56 [2019-12-07 19:42:31,864 WARN L192 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 50 [2019-12-07 19:42:32,060 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 15 [2019-12-07 19:42:32,278 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 18 [2019-12-07 19:42:32,576 WARN L192 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 15 [2019-12-07 19:42:33,000 WARN L192 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 20 [2019-12-07 19:42:33,201 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 24 [2019-12-07 19:42:34,529 WARN L192 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 242 DAG size of output: 31 [2019-12-07 19:42:34,903 WARN L192 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 21 [2019-12-07 19:42:34,988 INFO L246 CegarLoopResult]: For program point L168(lines 168 549) no Hoare annotation was computed. [2019-12-07 19:42:34,988 INFO L246 CegarLoopResult]: For program point L135(lines 135 560) no Hoare annotation was computed. [2019-12-07 19:42:34,988 INFO L242 CegarLoopResult]: At program point L102(lines 102 571) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__debug~0 0)) (.cse5 (= 0 ULTIMATE.start_ssl3_connect_~s__s3__tmp__reuse_message~0))) (let ((.cse9 (not .cse5)) (.cse6 (not .cse0)) (.cse2 (or (= 4560 ULTIMATE.start_ssl3_connect_~s__state~0) (= 3 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse7 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse8 (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse1 (or (= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0))) (.cse10 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4352)) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 5))) (.cse11 (or (<= ULTIMATE.start_ssl3_connect_~s__state~0 3) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse4 (= ULTIMATE.start_ssl3_connect_~skip~0 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse7 .cse3 .cse4 .cse5 .cse8) (and .cse7 .cse3 .cse4 .cse9 .cse8) (and .cse6 .cse1 .cse10 .cse3 .cse11 .cse4 .cse5) (and .cse1 .cse2 .cse3 .cse4 .cse9) (and .cse1 .cse10 .cse3 .cse11 .cse4 .cse9) (and .cse6 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse7 .cse3 .cse4 .cse5 .cse8) (and .cse0 .cse1 .cse10 .cse3 .cse11 .cse4 .cse5) (and (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) .cse4)))) [2019-12-07 19:42:34,988 INFO L246 CegarLoopResult]: For program point L433-2(lines 203 535) no Hoare annotation was computed. [2019-12-07 19:42:34,988 INFO L242 CegarLoopResult]: At program point L169(lines 165 550) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4512) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) (= ULTIMATE.start_ssl3_connect_~skip~0 0) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) [2019-12-07 19:42:34,988 INFO L246 CegarLoopResult]: For program point L368(lines 368 372) no Hoare annotation was computed. [2019-12-07 19:42:34,988 INFO L246 CegarLoopResult]: For program point L171(lines 171 548) no Hoare annotation was computed. [2019-12-07 19:42:34,988 INFO L246 CegarLoopResult]: For program point L138(lines 138 559) no Hoare annotation was computed. [2019-12-07 19:42:34,988 INFO L246 CegarLoopResult]: For program point L105(lines 105 570) no Hoare annotation was computed. [2019-12-07 19:42:34,989 INFO L242 CegarLoopResult]: At program point L139(lines 135 560) the Hoare annotation is: (and (not (= 4384 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) (or (<= ULTIMATE.start_ssl3_connect_~s__state~0 3) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~skip~0 0)) [2019-12-07 19:42:34,989 INFO L242 CegarLoopResult]: At program point L536(lines 99 602) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__debug~0 0)) (.cse5 (= 0 ULTIMATE.start_ssl3_connect_~s__s3__tmp__reuse_message~0))) (let ((.cse11 (not .cse5)) (.cse6 (not .cse0)) (.cse2 (or (= 4560 ULTIMATE.start_ssl3_connect_~s__state~0) (= 3 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse7 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse8 (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse1 (or (= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0))) (.cse9 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4352)) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 5))) (.cse10 (or (<= ULTIMATE.start_ssl3_connect_~s__state~0 3) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse12 (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) (.cse13 (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4))) (.cse4 (= ULTIMATE.start_ssl3_connect_~skip~0 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse7 .cse3 .cse4 .cse5 .cse8) (and .cse1 .cse9 .cse3 .cse10 .cse11) (and .cse1 .cse2 .cse3 .cse11) (and .cse7 .cse3 .cse11 .cse8) (and .cse6 .cse1 .cse9 .cse3 .cse10 .cse4 .cse5) (and .cse12 .cse13 .cse11) (and (not (= 4384 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) .cse10 .cse12 .cse13) (and .cse6 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse7 .cse3 .cse4 .cse5 .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse10 .cse4 .cse5) (and .cse12 .cse13 .cse4)))) [2019-12-07 19:42:34,989 INFO L249 CegarLoopResult]: At program point L603(lines 98 604) the Hoare annotation is: true [2019-12-07 19:42:34,989 INFO L246 CegarLoopResult]: For program point L174(lines 174 547) no Hoare annotation was computed. [2019-12-07 19:42:34,989 INFO L246 CegarLoopResult]: For program point L141(lines 141 558) no Hoare annotation was computed. [2019-12-07 19:42:34,989 INFO L246 CegarLoopResult]: For program point L108(lines 108 569) no Hoare annotation was computed. [2019-12-07 19:42:34,989 INFO L242 CegarLoopResult]: At program point L208(lines 105 570) the Hoare annotation is: (and (not (= 4384 ULTIMATE.start_ssl3_connect_~s__state~0)) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (= ULTIMATE.start_ssl3_connect_~skip~0 0)) [2019-12-07 19:42:34,989 INFO L242 CegarLoopResult]: At program point L175(lines 171 548) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4512) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) (= ULTIMATE.start_ssl3_connect_~skip~0 0) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) [2019-12-07 19:42:34,989 INFO L246 CegarLoopResult]: For program point L572(lines 572 600) no Hoare annotation was computed. [2019-12-07 19:42:34,989 INFO L246 CegarLoopResult]: For program point L573(lines 573 597) no Hoare annotation was computed. [2019-12-07 19:42:34,989 INFO L246 CegarLoopResult]: For program point L342(lines 342 347) no Hoare annotation was computed. [2019-12-07 19:42:34,989 INFO L246 CegarLoopResult]: For program point L309-1(lines 309 323) no Hoare annotation was computed. [2019-12-07 19:42:34,989 INFO L246 CegarLoopResult]: For program point L177(lines 177 546) no Hoare annotation was computed. [2019-12-07 19:42:34,990 INFO L246 CegarLoopResult]: For program point L144(lines 144 557) no Hoare annotation was computed. [2019-12-07 19:42:34,990 INFO L246 CegarLoopResult]: For program point L111(lines 111 568) no Hoare annotation was computed. [2019-12-07 19:42:34,990 INFO L246 CegarLoopResult]: For program point L574(lines 574 583) no Hoare annotation was computed. [2019-12-07 19:42:34,990 INFO L246 CegarLoopResult]: For program point L574-2(lines 573 595) no Hoare annotation was computed. [2019-12-07 19:42:34,990 INFO L242 CegarLoopResult]: At program point L145(lines 141 558) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4448) (= ULTIMATE.start_ssl3_connect_~skip~0 0) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) [2019-12-07 19:42:34,990 INFO L246 CegarLoopResult]: For program point L576(lines 576 580) no Hoare annotation was computed. [2019-12-07 19:42:34,990 INFO L246 CegarLoopResult]: For program point L444(lines 444 449) no Hoare annotation was computed. [2019-12-07 19:42:34,990 INFO L246 CegarLoopResult]: For program point L180(lines 180 545) no Hoare annotation was computed. [2019-12-07 19:42:34,990 INFO L246 CegarLoopResult]: For program point L147(lines 147 556) no Hoare annotation was computed. [2019-12-07 19:42:34,990 INFO L246 CegarLoopResult]: For program point L213-2(lines 203 535) no Hoare annotation was computed. [2019-12-07 19:42:34,990 INFO L246 CegarLoopResult]: For program point L114(lines 114 567) no Hoare annotation was computed. [2019-12-07 19:42:34,990 INFO L246 CegarLoopResult]: For program point L478(lines 478 482) no Hoare annotation was computed. [2019-12-07 19:42:34,990 INFO L246 CegarLoopResult]: For program point L313-2(lines 311 323) no Hoare annotation was computed. [2019-12-07 19:42:34,990 INFO L242 CegarLoopResult]: At program point L181(lines 177 546) the Hoare annotation is: (and (<= 4512 ULTIMATE.start_ssl3_connect_~s__state~0) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) (= ULTIMATE.start_ssl3_connect_~skip~0 0)) [2019-12-07 19:42:34,990 INFO L246 CegarLoopResult]: For program point L413(lines 413 417) no Hoare annotation was computed. [2019-12-07 19:42:34,990 INFO L246 CegarLoopResult]: For program point L249(lines 249 254) no Hoare annotation was computed. [2019-12-07 19:42:34,991 INFO L246 CegarLoopResult]: For program point L183(lines 183 544) no Hoare annotation was computed. [2019-12-07 19:42:34,991 INFO L246 CegarLoopResult]: For program point L150(lines 150 555) no Hoare annotation was computed. [2019-12-07 19:42:34,991 INFO L246 CegarLoopResult]: For program point L117(lines 117 566) no Hoare annotation was computed. [2019-12-07 19:42:34,991 INFO L242 CegarLoopResult]: At program point L151(lines 147 556) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4480) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) (= ULTIMATE.start_ssl3_connect_~skip~0 0) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) [2019-12-07 19:42:34,991 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 19:42:34,991 INFO L246 CegarLoopResult]: For program point L186(lines 186 543) no Hoare annotation was computed. [2019-12-07 19:42:34,991 INFO L246 CegarLoopResult]: For program point L153(lines 153 554) no Hoare annotation was computed. [2019-12-07 19:42:34,991 INFO L246 CegarLoopResult]: For program point L120(lines 120 565) no Hoare annotation was computed. [2019-12-07 19:42:34,991 INFO L246 CegarLoopResult]: For program point L385(lines 385 389) no Hoare annotation was computed. [2019-12-07 19:42:34,991 INFO L246 CegarLoopResult]: For program point L352(lines 352 356) no Hoare annotation was computed. [2019-12-07 19:42:34,991 INFO L242 CegarLoopResult]: At program point L187(lines 183 544) the Hoare annotation is: (and (<= 4512 ULTIMATE.start_ssl3_connect_~s__state~0) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) (= ULTIMATE.start_ssl3_connect_~skip~0 0)) [2019-12-07 19:42:34,991 INFO L242 CegarLoopResult]: At program point L121(lines 117 566) the Hoare annotation is: (and (not (= 4384 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) (or (<= ULTIMATE.start_ssl3_connect_~s__state~0 3) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (= ULTIMATE.start_ssl3_connect_~skip~0 0)) [2019-12-07 19:42:34,991 INFO L242 CegarLoopResult]: At program point L353(lines 66 620) the Hoare annotation is: false [2019-12-07 19:42:34,991 INFO L249 CegarLoopResult]: At program point L618(lines 66 620) the Hoare annotation is: true [2019-12-07 19:42:34,991 INFO L246 CegarLoopResult]: For program point L288-2(lines 203 535) no Hoare annotation was computed. [2019-12-07 19:42:34,991 INFO L246 CegarLoopResult]: For program point L189(lines 189 542) no Hoare annotation was computed. [2019-12-07 19:42:34,991 INFO L246 CegarLoopResult]: For program point L156(lines 156 553) no Hoare annotation was computed. [2019-12-07 19:42:34,991 INFO L246 CegarLoopResult]: For program point L123(lines 123 564) no Hoare annotation was computed. [2019-12-07 19:42:34,992 INFO L246 CegarLoopResult]: For program point L454(lines 454 458) no Hoare annotation was computed. [2019-12-07 19:42:34,992 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 19:42:34,992 INFO L246 CegarLoopResult]: For program point L357(lines 357 361) no Hoare annotation was computed. [2019-12-07 19:42:34,992 INFO L246 CegarLoopResult]: For program point L225(lines 225 242) no Hoare annotation was computed. [2019-12-07 19:42:34,992 INFO L246 CegarLoopResult]: For program point L192(lines 192 541) no Hoare annotation was computed. [2019-12-07 19:42:34,992 INFO L246 CegarLoopResult]: For program point L159(lines 159 552) no Hoare annotation was computed. [2019-12-07 19:42:34,992 INFO L246 CegarLoopResult]: For program point L225-2(lines 203 535) no Hoare annotation was computed. [2019-12-07 19:42:34,992 INFO L246 CegarLoopResult]: For program point L126(lines 126 563) no Hoare annotation was computed. [2019-12-07 19:42:34,992 INFO L242 CegarLoopResult]: At program point L193(lines 189 542) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~skip~0 0))) (or (and (<= 4560 ULTIMATE.start_ssl3_connect_~s__state~0) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) .cse0) (and (or (= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0)) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) (= 4560 ULTIMATE.start_ssl3_connect_~s__state~0) .cse0))) [2019-12-07 19:42:34,992 INFO L242 CegarLoopResult]: At program point L127(lines 123 564) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) (or (<= ULTIMATE.start_ssl3_connect_~s__state~0 3) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (= ULTIMATE.start_ssl3_connect_~skip~0 0)) [2019-12-07 19:42:34,992 INFO L246 CegarLoopResult]: For program point L491-1(lines 491 503) no Hoare annotation was computed. [2019-12-07 19:42:34,992 INFO L246 CegarLoopResult]: For program point L425(lines 425 429) no Hoare annotation was computed. [2019-12-07 19:42:34,992 INFO L246 CegarLoopResult]: For program point L227(lines 227 232) no Hoare annotation was computed. [2019-12-07 19:42:34,993 INFO L242 CegarLoopResult]: At program point L195(lines 195 540) the Hoare annotation is: (let ((.cse0 (not (= 4384 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse1 (or (= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0))) (.cse2 (= ULTIMATE.start_ssl3_connect_~skip~0 0))) (or (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) .cse2) (and .cse0 (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) .cse2) (and .cse1 .cse2 (= 3 ULTIMATE.start_ssl3_connect_~s__state~0)) (and .cse2 (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)))) [2019-12-07 19:42:34,993 INFO L246 CegarLoopResult]: For program point L162(lines 162 551) no Hoare annotation was computed. [2019-12-07 19:42:34,993 INFO L246 CegarLoopResult]: For program point L129(lines 129 562) no Hoare annotation was computed. [2019-12-07 19:42:34,993 INFO L242 CegarLoopResult]: At program point L196(lines 195 540) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4352)) (.cse1 (or (<= ULTIMATE.start_ssl3_connect_~s__state~0 3) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (= ULTIMATE.start_ssl3_connect_~skip~0 0))) (or (and (or (= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0)) .cse0 (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) .cse1 .cse2) (and .cse0 .cse1 (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) .cse2))) [2019-12-07 19:42:34,993 INFO L242 CegarLoopResult]: At program point L163(lines 153 554) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4480) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 5)) (= ULTIMATE.start_ssl3_connect_~skip~0 0) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)) [2019-12-07 19:42:34,993 INFO L246 CegarLoopResult]: For program point L494(lines 494 499) no Hoare annotation was computed. [2019-12-07 19:42:34,993 INFO L246 CegarLoopResult]: For program point L263-2(lines 203 535) no Hoare annotation was computed. [2019-12-07 19:42:34,993 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 614) no Hoare annotation was computed. [2019-12-07 19:42:34,994 INFO L246 CegarLoopResult]: For program point L396(lines 396 400) no Hoare annotation was computed. [2019-12-07 19:42:34,994 INFO L246 CegarLoopResult]: For program point L330-2(lines 203 535) no Hoare annotation was computed. [2019-12-07 19:42:34,994 INFO L246 CegarLoopResult]: For program point L165(lines 165 550) no Hoare annotation was computed. [2019-12-07 19:42:34,994 INFO L246 CegarLoopResult]: For program point L132(lines 132 561) no Hoare annotation was computed. [2019-12-07 19:42:34,994 INFO L246 CegarLoopResult]: For program point L99-1(lines 66 620) no Hoare annotation was computed. [2019-12-07 19:42:34,994 INFO L242 CegarLoopResult]: At program point L133(lines 129 562) the Hoare annotation is: (and (not (= 4384 ULTIMATE.start_ssl3_connect_~s__state~0)) (<= ULTIMATE.start_ssl3_connect_~s__state~0 4432) (or (<= ULTIMATE.start_ssl3_connect_~s__state~0 3) (<= 4352 ULTIMATE.start_ssl3_connect_~s__state~0)) (< ULTIMATE.start_ssl3_connect_~blastFlag~0 5) (not (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (= ULTIMATE.start_ssl3_connect_~skip~0 0)) [2019-12-07 19:42:34,994 INFO L246 CegarLoopResult]: For program point L233(lines 233 238) no Hoare annotation was computed. [2019-12-07 19:42:35,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:42:35 BoogieIcfgContainer [2019-12-07 19:42:35,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:42:35,021 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:42:35,021 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:42:35,021 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:42:35,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:32:54" (3/4) ... [2019-12-07 19:42:35,024 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 19:42:35,039 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2019-12-07 19:42:35,041 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 19:42:35,042 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 19:42:35,128 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5d7a384a-7cab-439d-8b2a-4d84c26cb4f7/bin/utaipan/witness.graphml [2019-12-07 19:42:35,128 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:42:35,130 INFO L168 Benchmark]: Toolchain (without parser) took 582028.08 ms. Allocated memory was 1.0 GB in the beginning and 3.0 GB in the end (delta: 1.9 GB). Free memory was 942.5 MB in the beginning and 1.8 GB in the end (delta: -854.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 11.5 GB. [2019-12-07 19:42:35,130 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:42:35,130 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -145.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2019-12-07 19:42:35,130 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:42:35,131 INFO L168 Benchmark]: Boogie Preprocessor took 24.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 19:42:35,131 INFO L168 Benchmark]: RCFGBuilder took 595.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 993.2 MB in the end (delta: 89.3 MB). Peak memory consumption was 89.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:42:35,131 INFO L168 Benchmark]: TraceAbstraction took 581014.04 ms. Allocated memory was 1.1 GB in the beginning and 3.0 GB in the end (delta: 1.8 GB). Free memory was 993.2 MB in the beginning and 1.8 GB in the end (delta: -848.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 11.5 GB. [2019-12-07 19:42:35,132 INFO L168 Benchmark]: Witness Printer took 107.75 ms. Allocated memory is still 3.0 GB. Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. [2019-12-07 19:42:35,133 INFO L335 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 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 248.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -145.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 595.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 993.2 MB in the end (delta: 89.3 MB). Peak memory consumption was 89.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 581014.04 ms. Allocated memory was 1.1 GB in the beginning and 3.0 GB in the end (delta: 1.8 GB). Free memory was 993.2 MB in the beginning and 1.8 GB in the end (delta: -848.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 11.5 GB. * Witness Printer took 107.75 ms. Allocated memory is still 3.0 GB. Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 614]: 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 - InvariantResult [Line: 171]: Loop Invariant Derived loop invariant: ((s__state <= 4512 && !(blastFlag == 5)) && skip == 0) && 4432 <= s__state - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: ((((!(4384 == s__state) && s__state <= 4432) && (s__state <= 3 || 4352 <= s__state)) && blastFlag < 5) && !(blastFlag == 4)) && skip == 0 - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: ((!(4384 == s__state) && blastFlag < 5) && !(blastFlag == 4)) && skip == 0 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: (((((((((((((((s__debug == 0 && (4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0)) && (4560 == s__state || 3 == s__state)) && !(blastFlag == 5)) && skip == 0) && 0 == s__s3__tmp__reuse_message) || (((((!(s__debug == 0) && s__state <= 4528) && !(blastFlag == 5)) && skip == 0) && 0 == s__s3__tmp__reuse_message) && 4432 <= s__state)) || (((((4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0) && s__state <= 4352) && !(blastFlag == 5)) && (s__state <= 3 || 4352 <= s__state)) && !(0 == s__s3__tmp__reuse_message))) || ((((4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0) && (4560 == s__state || 3 == s__state)) && !(blastFlag == 5)) && !(0 == s__s3__tmp__reuse_message))) || (((s__state <= 4528 && !(blastFlag == 5)) && !(0 == s__s3__tmp__reuse_message)) && 4432 <= s__state)) || ((((((!(s__debug == 0) && (4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0)) && s__state <= 4352) && !(blastFlag == 5)) && (s__state <= 3 || 4352 <= s__state)) && skip == 0) && 0 == s__s3__tmp__reuse_message)) || ((blastFlag < 5 && !(blastFlag == 4)) && !(0 == s__s3__tmp__reuse_message))) || ((((!(4384 == s__state) && s__state <= 4432) && (s__state <= 3 || 4352 <= s__state)) && blastFlag < 5) && !(blastFlag == 4))) || (((((!(s__debug == 0) && (4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0)) && (4560 == s__state || 3 == s__state)) && !(blastFlag == 5)) && skip == 0) && 0 == s__s3__tmp__reuse_message)) || (((((s__debug == 0 && s__state <= 4528) && !(blastFlag == 5)) && skip == 0) && 0 == s__s3__tmp__reuse_message) && 4432 <= s__state)) || ((((((s__debug == 0 && (4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0)) && s__state <= 4352) && !(blastFlag == 5)) && (s__state <= 3 || 4352 <= s__state)) && skip == 0) && 0 == s__s3__tmp__reuse_message)) || ((blastFlag < 5 && !(blastFlag == 4)) && skip == 0) - InvariantResult [Line: 183]: Loop Invariant Derived loop invariant: (4512 <= s__state && !(blastFlag == 5)) && skip == 0 - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: (((((((((((((s__debug == 0 && (4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0)) && (4560 == s__state || 3 == s__state)) && !(blastFlag == 5)) && skip == 0) && 0 == s__s3__tmp__reuse_message) || (((((!(s__debug == 0) && s__state <= 4528) && !(blastFlag == 5)) && skip == 0) && 0 == s__s3__tmp__reuse_message) && 4432 <= s__state)) || ((((s__state <= 4528 && !(blastFlag == 5)) && skip == 0) && !(0 == s__s3__tmp__reuse_message)) && 4432 <= s__state)) || ((((((!(s__debug == 0) && (4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0)) && s__state <= 4352) && !(blastFlag == 5)) && (s__state <= 3 || 4352 <= s__state)) && skip == 0) && 0 == s__s3__tmp__reuse_message)) || (((((4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0) && (4560 == s__state || 3 == s__state)) && !(blastFlag == 5)) && skip == 0) && !(0 == s__s3__tmp__reuse_message))) || ((((((4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0) && s__state <= 4352) && !(blastFlag == 5)) && (s__state <= 3 || 4352 <= s__state)) && skip == 0) && !(0 == s__s3__tmp__reuse_message))) || (((((!(s__debug == 0) && (4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0)) && (4560 == s__state || 3 == s__state)) && !(blastFlag == 5)) && skip == 0) && 0 == s__s3__tmp__reuse_message)) || (((((s__debug == 0 && s__state <= 4528) && !(blastFlag == 5)) && skip == 0) && 0 == s__s3__tmp__reuse_message) && 4432 <= s__state)) || ((((((s__debug == 0 && (4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0)) && s__state <= 4352) && !(blastFlag == 5)) && (s__state <= 3 || 4352 <= s__state)) && skip == 0) && 0 == s__s3__tmp__reuse_message)) || ((blastFlag < 5 && !(blastFlag == 4)) && skip == 0) - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: ((!(blastFlag == 5) && s__state <= 4448) && skip == 0) && 4432 <= s__state - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 165]: Loop Invariant Derived loop invariant: ((s__state <= 4512 && !(blastFlag == 5)) && skip == 0) && 4432 <= s__state - InvariantResult [Line: 123]: Loop Invariant Derived loop invariant: (((s__state <= 4432 && (s__state <= 3 || 4352 <= s__state)) && blastFlag < 5) && !(blastFlag == 4)) && skip == 0 - InvariantResult [Line: 177]: Loop Invariant Derived loop invariant: ((4512 <= s__state && s__state <= 4528) && !(blastFlag == 5)) && skip == 0 - InvariantResult [Line: 135]: Loop Invariant Derived loop invariant: (((!(4384 == s__state) && !(blastFlag == 5)) && s__state <= 4432) && (s__state <= 3 || 4352 <= s__state)) && skip == 0 - InvariantResult [Line: 189]: Loop Invariant Derived loop invariant: (((4560 <= s__state && blastFlag < 5) && !(blastFlag == 4)) && skip == 0) || ((((4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0) && !(blastFlag == 5)) && 4560 == s__state) && skip == 0) - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: ((s__state <= 4480 && !(blastFlag == 5)) && skip == 0) && 4432 <= s__state - InvariantResult [Line: 98]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 153]: Loop Invariant Derived loop invariant: ((s__state <= 4480 && !(blastFlag == 5)) && skip == 0) && 4432 <= s__state - InvariantResult [Line: 195]: Loop Invariant Derived loop invariant: (((((!(4384 == s__state) && (4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0)) && !(blastFlag == 5)) && skip == 0) || (((!(4384 == s__state) && blastFlag < 5) && !(blastFlag == 4)) && skip == 0)) || (((4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0) && skip == 0) && 3 == s__state)) || (skip == 0 && 4432 <= s__state) - InvariantResult [Line: 117]: Loop Invariant Derived loop invariant: ((((!(4384 == s__state) && s__state <= 4432) && (s__state <= 3 || 4352 <= s__state)) && blastFlag < 5) && !(blastFlag == 4)) && skip == 0 - InvariantResult [Line: 195]: Loop Invariant Derived loop invariant: (((((4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0) && s__state <= 4352) && !(blastFlag == 5)) && (s__state <= 3 || 4352 <= s__state)) && skip == 0) || ((((s__state <= 4352 && (s__state <= 3 || 4352 <= s__state)) && blastFlag < 5) && !(blastFlag == 4)) && skip == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 1 error locations. Result: SAFE, OverallTime: 571.3s, OverallIterations: 21, TraceHistogramMax: 14, AutomataDifference: 42.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.6s, HoareTripleCheckerStatistics: 2766 SDtfs, 6419 SDslu, 2552 SDs, 0 SdLazy, 4177 SolverSat, 674 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1482 GetRequests, 1172 SyntacticMatches, 15 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7120 ImplicationChecksByTransitivity, 74.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5039occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 21 MinimizatonAttempts, 3739 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 20 PreInvPairs, 458 NumberOfFragments, 859 HoareAnnotationTreeSize, 20 FomulaSimplifications, 18844207 FormulaSimplificationTreeSizeReduction, 2.1s HoareSimplificationTime, 20 FomulaSimplificationsInter, 2357784 FormulaSimplificationTreeSizeReductionInter, 7.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 2976 NumberOfCodeBlocks, 2976 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 3386 ConstructedInterpolants, 0 QuantifiedInterpolants, 966185 SizeOfPredicates, 9 NumberOfNonLiveVariables, 953 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 29 InterpolantComputations, 17 PerfectInterpolantSequences, 8720/9049 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 2406, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 77, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 653, TOOLS_POST_TIME[ms]: 205, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 519, TOOLS_QUANTIFIERELIM_TIME[ms]: 129, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 4, FLUID_QUERY_TIME[ms]: 14, FLUID_QUERIES: 832, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 30, DOMAIN_JOIN_TIME[ms]: 1382, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 8, DOMAIN_WIDEN_TIME[ms]: 454, DOMAIN_ISSUBSETEQ_APPLICATIONS: 42, DOMAIN_ISSUBSETEQ_TIME[ms]: 55, DOMAIN_ISBOTTOM_APPLICATIONS: 77, DOMAIN_ISBOTTOM_TIME[ms]: 164, LOOP_SUMMARIZER_APPLICATIONS: 34, LOOP_SUMMARIZER_CACHE_MISSES: 34, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 964, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 964, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 42, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 6, DAG_COMPRESSION_TIME[ms]: 74, DAG_COMPRESSION_PROCESSED_NODES: 6705, DAG_COMPRESSION_RETAINED_NODES: 296, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...