./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ssh-simplified/s3_clnt_4.cil-1.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_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ssh-simplified/s3_clnt_4.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/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 4e02aecb828ddbcb4cc0dcb3053661f316d65cc9 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:58:47,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:58:47,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:58:47,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:58:47,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:58:47,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:58:47,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:58:47,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:58:47,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:58:47,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:58:47,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:58:47,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:58:47,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:58:47,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:58:47,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:58:47,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:58:47,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:58:47,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:58:47,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:58:47,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:58:47,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:58:47,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:58:47,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:58:47,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:58:47,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:58:47,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:58:47,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:58:47,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:58:47,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:58:47,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:58:47,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:58:47,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:58:47,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:58:47,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:58:47,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:58:47,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:58:47,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:58:47,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:58:47,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:58:47,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:58:47,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:58:47,329 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 11:58:47,341 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:58:47,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:58:47,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 11:58:47,342 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 11:58:47,342 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 11:58:47,343 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 11:58:47,343 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 11:58:47,343 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 11:58:47,343 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 11:58:47,343 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 11:58:47,343 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 11:58:47,343 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 11:58:47,344 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 11:58:47,344 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 11:58:47,344 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 11:58:47,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:58:47,345 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:58:47,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:58:47,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:58:47,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:58:47,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:58:47,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:58:47,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:58:47,345 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 11:58:47,346 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:58:47,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:58:47,346 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:58:47,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:58:47,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:58:47,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:58:47,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:58:47,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:58:47,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:58:47,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:58:47,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:58:47,347 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 11:58:47,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 11:58:47,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:58:47,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:58:47,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:58:47,348 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_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/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 -> 4e02aecb828ddbcb4cc0dcb3053661f316d65cc9 [2019-12-07 11:58:47,461 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:58:47,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:58:47,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:58:47,473 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:58:47,473 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:58:47,474 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/bin/utaipan/../../sv-benchmarks/c/ssh-simplified/s3_clnt_4.cil-1.c [2019-12-07 11:58:47,513 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/bin/utaipan/data/272166d60/87183cd0c3b948e68e83b99bdd35b1b6/FLAG6d6773879 [2019-12-07 11:58:47,825 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:58:47,826 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/sv-benchmarks/c/ssh-simplified/s3_clnt_4.cil-1.c [2019-12-07 11:58:47,832 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/bin/utaipan/data/272166d60/87183cd0c3b948e68e83b99bdd35b1b6/FLAG6d6773879 [2019-12-07 11:58:47,841 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/bin/utaipan/data/272166d60/87183cd0c3b948e68e83b99bdd35b1b6 [2019-12-07 11:58:47,843 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:58:47,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:58:47,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:58:47,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:58:47,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:58:47,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:58:47" (1/1) ... [2019-12-07 11:58:47,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5fc81d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:47, skipping insertion in model container [2019-12-07 11:58:47,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:58:47" (1/1) ... [2019-12-07 11:58:47,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:58:47,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:58:48,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:58:48,058 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:58:48,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:58:48,103 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:58:48,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48 WrapperNode [2019-12-07 11:58:48,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:58:48,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:58:48,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:58:48,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:58:48,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:48,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:48,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:58:48,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:58:48,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:58:48,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:58:48,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:48,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:48,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:48,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:48,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:48,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:48,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... [2019-12-07 11:58:48,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:58:48,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:58:48,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:58:48,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:58:48,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/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 11:58:48,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:58:48,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:58:48,290 WARN L738 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-12-07 11:58:48,578 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-12-07 11:58:48,578 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-12-07 11:58:48,776 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:58:48,777 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 11:58:48,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:58:48 BoogieIcfgContainer [2019-12-07 11:58:48,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:58:48,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:58:48,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:58:48,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:58:48,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:58:47" (1/3) ... [2019-12-07 11:58:48,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8208d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:58:48, skipping insertion in model container [2019-12-07 11:58:48,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:58:48" (2/3) ... [2019-12-07 11:58:48,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8208d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:58:48, skipping insertion in model container [2019-12-07 11:58:48,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:58:48" (3/3) ... [2019-12-07 11:58:48,782 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_4.cil-1.c [2019-12-07 11:58:48,789 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:58:48,794 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 11:58:48,801 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 11:58:48,819 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:58:48,819 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:58:48,819 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:58:48,819 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:58:48,819 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:58:48,819 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:58:48,819 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:58:48,819 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:58:48,831 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-12-07 11:58:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 11:58:48,835 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:58:48,836 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 11:58:48,836 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:58:48,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:58:48,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1584347361, now seen corresponding path program 1 times [2019-12-07 11:58:48,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:58:48,847 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099173275] [2019-12-07 11:58:48,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:58:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:58:48,971 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 11:58:48,971 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099173275] [2019-12-07 11:58:48,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:58:48,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:58:48,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787092702] [2019-12-07 11:58:48,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:58:48,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:58:48,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:58:48,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:58:48,987 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2019-12-07 11:58:49,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:58:49,088 INFO L93 Difference]: Finished difference Result 171 states and 295 transitions. [2019-12-07 11:58:49,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:58:49,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-07 11:58:49,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:58:49,097 INFO L225 Difference]: With dead ends: 171 [2019-12-07 11:58:49,097 INFO L226 Difference]: Without dead ends: 84 [2019-12-07 11:58:49,099 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 11:58:49,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-12-07 11:58:49,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2019-12-07 11:58:49,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-12-07 11:58:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 121 transitions. [2019-12-07 11:58:49,128 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 121 transitions. Word has length 19 [2019-12-07 11:58:49,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:58:49,128 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 121 transitions. [2019-12-07 11:58:49,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:58:49,128 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 121 transitions. [2019-12-07 11:58:49,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 11:58:49,129 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:58:49,129 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 11:58:49,129 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:58:49,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:58:49,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1189841522, now seen corresponding path program 1 times [2019-12-07 11:58:49,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:58:49,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614290928] [2019-12-07 11:58:49,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:58:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:58:49,172 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 11:58:49,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614290928] [2019-12-07 11:58:49,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:58:49,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:58:49,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676747399] [2019-12-07 11:58:49,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:58:49,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:58:49,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:58:49,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:58:49,175 INFO L87 Difference]: Start difference. First operand 84 states and 121 transitions. Second operand 3 states. [2019-12-07 11:58:49,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:58:49,271 INFO L93 Difference]: Finished difference Result 180 states and 263 transitions. [2019-12-07 11:58:49,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:58:49,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-12-07 11:58:49,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:58:49,272 INFO L225 Difference]: With dead ends: 180 [2019-12-07 11:58:49,273 INFO L226 Difference]: Without dead ends: 99 [2019-12-07 11:58:49,273 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 11:58:49,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-12-07 11:58:49,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2019-12-07 11:58:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-12-07 11:58:49,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 137 transitions. [2019-12-07 11:58:49,281 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 137 transitions. Word has length 28 [2019-12-07 11:58:49,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:58:49,281 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 137 transitions. [2019-12-07 11:58:49,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:58:49,281 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 137 transitions. [2019-12-07 11:58:49,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-07 11:58:49,283 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:58:49,283 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 11:58:49,283 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:58:49,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:58:49,283 INFO L82 PathProgramCache]: Analyzing trace with hash -615899664, now seen corresponding path program 1 times [2019-12-07 11:58:49,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:58:49,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146037094] [2019-12-07 11:58:49,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:58:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:58:49,328 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 11:58:49,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146037094] [2019-12-07 11:58:49,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:58:49,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:58:49,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124161576] [2019-12-07 11:58:49,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:58:49,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:58:49,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:58:49,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:58:49,330 INFO L87 Difference]: Start difference. First operand 97 states and 137 transitions. Second operand 3 states. [2019-12-07 11:58:49,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:58:49,410 INFO L93 Difference]: Finished difference Result 208 states and 299 transitions. [2019-12-07 11:58:49,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:58:49,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-12-07 11:58:49,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:58:49,413 INFO L225 Difference]: With dead ends: 208 [2019-12-07 11:58:49,413 INFO L226 Difference]: Without dead ends: 114 [2019-12-07 11:58:49,414 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 11:58:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-12-07 11:58:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2019-12-07 11:58:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-12-07 11:58:49,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 155 transitions. [2019-12-07 11:58:49,423 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 155 transitions. Word has length 39 [2019-12-07 11:58:49,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:58:49,423 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 155 transitions. [2019-12-07 11:58:49,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:58:49,423 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 155 transitions. [2019-12-07 11:58:49,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-12-07 11:58:49,425 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:58:49,425 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 11:58:49,425 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:58:49,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:58:49,426 INFO L82 PathProgramCache]: Analyzing trace with hash -200842674, now seen corresponding path program 1 times [2019-12-07 11:58:49,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:58:49,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632130458] [2019-12-07 11:58:49,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:58:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:58:49,489 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 11:58:49,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632130458] [2019-12-07 11:58:49,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771342408] [2019-12-07 11:58:49,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/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 11:58:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:58:49,535 INFO L264 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 11:58:49,539 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:58:49,579 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-12-07 11:58:49,579 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:58:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-12-07 11:58:49,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:58:49,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 9 [2019-12-07 11:58:49,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503106657] [2019-12-07 11:58:49,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 11:58:49,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:58:49,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 11:58:49,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-12-07 11:58:49,608 INFO L87 Difference]: Start difference. First operand 112 states and 155 transitions. Second operand 6 states. [2019-12-07 11:58:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:58:49,805 INFO L93 Difference]: Finished difference Result 315 states and 470 transitions. [2019-12-07 11:58:49,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 11:58:49,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2019-12-07 11:58:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:58:49,807 INFO L225 Difference]: With dead ends: 315 [2019-12-07 11:58:49,807 INFO L226 Difference]: Without dead ends: 205 [2019-12-07 11:58:49,808 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-12-07 11:58:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-12-07 11:58:49,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 187. [2019-12-07 11:58:49,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2019-12-07 11:58:49,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 256 transitions. [2019-12-07 11:58:49,817 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 256 transitions. Word has length 52 [2019-12-07 11:58:49,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:58:49,818 INFO L462 AbstractCegarLoop]: Abstraction has 187 states and 256 transitions. [2019-12-07 11:58:49,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 11:58:49,818 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 256 transitions. [2019-12-07 11:58:49,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-12-07 11:58:49,820 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:58:49,820 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 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, 1] [2019-12-07 11:58:50,021 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:58:50,021 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:58:50,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:58:50,022 INFO L82 PathProgramCache]: Analyzing trace with hash 171720553, now seen corresponding path program 1 times [2019-12-07 11:58:50,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:58:50,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377085707] [2019-12-07 11:58:50,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:58:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:58:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-12-07 11:58:50,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377085707] [2019-12-07 11:58:50,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:58:50,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:58:50,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127646354] [2019-12-07 11:58:50,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:58:50,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:58:50,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:58:50,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:58:50,071 INFO L87 Difference]: Start difference. First operand 187 states and 256 transitions. Second operand 3 states. [2019-12-07 11:58:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:58:50,145 INFO L93 Difference]: Finished difference Result 392 states and 545 transitions. [2019-12-07 11:58:50,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:58:50,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2019-12-07 11:58:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:58:50,147 INFO L225 Difference]: With dead ends: 392 [2019-12-07 11:58:50,147 INFO L226 Difference]: Without dead ends: 208 [2019-12-07 11:58:50,148 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 11:58:50,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2019-12-07 11:58:50,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2019-12-07 11:58:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2019-12-07 11:58:50,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 278 transitions. [2019-12-07 11:58:50,157 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 278 transitions. Word has length 68 [2019-12-07 11:58:50,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:58:50,157 INFO L462 AbstractCegarLoop]: Abstraction has 206 states and 278 transitions. [2019-12-07 11:58:50,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:58:50,157 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 278 transitions. [2019-12-07 11:58:50,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-12-07 11:58:50,159 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:58:50,159 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1] [2019-12-07 11:58:50,159 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:58:50,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:58:50,159 INFO L82 PathProgramCache]: Analyzing trace with hash -956323728, now seen corresponding path program 1 times [2019-12-07 11:58:50,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:58:50,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952611087] [2019-12-07 11:58:50,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:58:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:58:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-07 11:58:50,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952611087] [2019-12-07 11:58:50,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835891042] [2019-12-07 11:58:50,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/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 11:58:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:58:50,289 INFO L264 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 11:58:50,293 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:58:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-12-07 11:58:50,308 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:58:50,313 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:58:50,320 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:58:50,325 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:58:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-12-07 11:58:50,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:58:50,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 4] total 6 [2019-12-07 11:58:50,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130098822] [2019-12-07 11:58:50,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:58:50,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:58:50,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:58:50,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 11:58:50,336 INFO L87 Difference]: Start difference. First operand 206 states and 278 transitions. Second operand 3 states. [2019-12-07 11:58:50,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:58:50,350 INFO L93 Difference]: Finished difference Result 408 states and 552 transitions. [2019-12-07 11:58:50,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:58:50,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-12-07 11:58:50,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:58:50,353 INFO L225 Difference]: With dead ends: 408 [2019-12-07 11:58:50,353 INFO L226 Difference]: Without dead ends: 406 [2019-12-07 11:58:50,353 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 11:58:50,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2019-12-07 11:58:50,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2019-12-07 11:58:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2019-12-07 11:58:50,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 550 transitions. [2019-12-07 11:58:50,363 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 550 transitions. Word has length 86 [2019-12-07 11:58:50,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:58:50,363 INFO L462 AbstractCegarLoop]: Abstraction has 406 states and 550 transitions. [2019-12-07 11:58:50,363 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:58:50,363 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 550 transitions. [2019-12-07 11:58:50,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-12-07 11:58:50,365 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:58:50,365 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1] [2019-12-07 11:58:50,565 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:58:50,566 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:58:50,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:58:50,566 INFO L82 PathProgramCache]: Analyzing trace with hash -946815228, now seen corresponding path program 1 times [2019-12-07 11:58:50,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:58:50,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045915268] [2019-12-07 11:58:50,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:58:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:58:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 11:58:50,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045915268] [2019-12-07 11:58:50,638 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409481992] [2019-12-07 11:58:50,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/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 11:58:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:58:50,694 INFO L264 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 11:58:50,697 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:58:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 11:58:50,723 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:58:50,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:58:50,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:58:50,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:58:50,752 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:58:50,760 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:58:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-12-07 11:58:50,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [244689914] [2019-12-07 11:58:50,794 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2019-12-07 11:58:50,794 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:58:50,798 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 11:58:50,803 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 11:58:50,803 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 11:58:55,571 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 11:58:56,040 WARN L192 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 148 [2019-12-07 11:58:56,412 WARN L192 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2019-12-07 11:58:56,808 WARN L192 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 145 [2019-12-07 11:58:57,192 WARN L192 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 148 [2019-12-07 11:58:57,659 WARN L192 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 157 [2019-12-07 11:58:58,126 WARN L192 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 156 [2019-12-07 11:58:58,803 WARN L192 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 170 [2019-12-07 11:58:59,416 WARN L192 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 172 [2019-12-07 11:58:59,856 WARN L192 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 147 [2019-12-07 11:59:00,294 WARN L192 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 150 [2019-12-07 11:59:00,844 WARN L192 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 153 [2019-12-07 11:59:01,379 WARN L192 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 145 [2019-12-07 11:59:01,843 WARN L192 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 151 [2019-12-07 11:59:02,626 WARN L192 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 155 [2019-12-07 11:59:03,239 WARN L192 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 158 [2019-12-07 11:59:03,827 WARN L192 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 146 [2019-12-07 11:59:04,308 WARN L192 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 150 [2019-12-07 11:59:05,074 WARN L192 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 161 [2019-12-07 11:59:05,646 WARN L192 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 164 [2019-12-07 11:59:06,269 WARN L192 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 161 [2019-12-07 11:59:06,923 WARN L192 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 163 [2019-12-07 11:59:07,582 WARN L192 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 176 [2019-12-07 11:59:08,304 WARN L192 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 175 [2019-12-07 11:59:09,045 WARN L192 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 167 [2019-12-07 11:59:09,662 WARN L192 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 170 [2019-12-07 11:59:10,231 WARN L192 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 146 [2019-12-07 11:59:10,798 WARN L192 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 151 [2019-12-07 11:59:11,344 WARN L192 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 152 [2019-12-07 11:59:12,194 WARN L192 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 173 [2019-12-07 11:59:12,844 WARN L192 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 176 [2019-12-07 11:59:13,448 WARN L192 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 146 [2019-12-07 11:59:14,003 WARN L192 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 147 [2019-12-07 11:59:14,005 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:59:14,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:59:14,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 3] total 8 [2019-12-07 11:59:14,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235342847] [2019-12-07 11:59:14,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 11:59:14,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:59:14,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 11:59:14,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1378, Unknown=0, NotChecked=0, Total=1640 [2019-12-07 11:59:14,007 INFO L87 Difference]: Start difference. First operand 406 states and 550 transitions. Second operand 9 states. [2019-12-07 11:59:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:59:14,063 INFO L93 Difference]: Finished difference Result 668 states and 894 transitions. [2019-12-07 11:59:14,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 11:59:14,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2019-12-07 11:59:14,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:59:14,067 INFO L225 Difference]: With dead ends: 668 [2019-12-07 11:59:14,067 INFO L226 Difference]: Without dead ends: 666 [2019-12-07 11:59:14,069 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 208 SyntacticMatches, 18 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=262, Invalid=1378, Unknown=0, NotChecked=0, Total=1640 [2019-12-07 11:59:14,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-12-07 11:59:14,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 607. [2019-12-07 11:59:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2019-12-07 11:59:14,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 823 transitions. [2019-12-07 11:59:14,084 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 823 transitions. Word has length 87 [2019-12-07 11:59:14,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:59:14,084 INFO L462 AbstractCegarLoop]: Abstraction has 607 states and 823 transitions. [2019-12-07 11:59:14,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 11:59:14,085 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 823 transitions. [2019-12-07 11:59:14,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-12-07 11:59:14,087 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:59:14,087 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 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] [2019-12-07 11:59:14,287 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:59:14,288 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:59:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:14,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1667500402, now seen corresponding path program 2 times [2019-12-07 11:59:14,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:59:14,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924401651] [2019-12-07 11:59:14,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:14,331 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-12-07 11:59:14,331 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924401651] [2019-12-07 11:59:14,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:59:14,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:59:14,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176777384] [2019-12-07 11:59:14,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:59:14,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:59:14,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:59:14,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:59:14,332 INFO L87 Difference]: Start difference. First operand 607 states and 823 transitions. Second operand 3 states. [2019-12-07 11:59:14,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:59:14,421 INFO L93 Difference]: Finished difference Result 1349 states and 1886 transitions. [2019-12-07 11:59:14,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:59:14,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-12-07 11:59:14,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:59:14,425 INFO L225 Difference]: With dead ends: 1349 [2019-12-07 11:59:14,426 INFO L226 Difference]: Without dead ends: 742 [2019-12-07 11:59:14,427 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 11:59:14,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2019-12-07 11:59:14,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 670. [2019-12-07 11:59:14,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2019-12-07 11:59:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 907 transitions. [2019-12-07 11:59:14,445 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 907 transitions. Word has length 122 [2019-12-07 11:59:14,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:59:14,446 INFO L462 AbstractCegarLoop]: Abstraction has 670 states and 907 transitions. [2019-12-07 11:59:14,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:59:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 907 transitions. [2019-12-07 11:59:14,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-12-07 11:59:14,448 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:59:14,448 INFO L410 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 4, 4, 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, 1, 1, 1] [2019-12-07 11:59:14,449 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:59:14,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:14,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1841034346, now seen corresponding path program 1 times [2019-12-07 11:59:14,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:59:14,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238491298] [2019-12-07 11:59:14,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-12-07 11:59:14,498 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238491298] [2019-12-07 11:59:14,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:59:14,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:59:14,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403081749] [2019-12-07 11:59:14,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:59:14,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:59:14,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:59:14,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:59:14,500 INFO L87 Difference]: Start difference. First operand 670 states and 907 transitions. Second operand 3 states. [2019-12-07 11:59:14,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:59:14,579 INFO L93 Difference]: Finished difference Result 1348 states and 1822 transitions. [2019-12-07 11:59:14,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:59:14,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-12-07 11:59:14,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:59:14,582 INFO L225 Difference]: With dead ends: 1348 [2019-12-07 11:59:14,582 INFO L226 Difference]: Without dead ends: 681 [2019-12-07 11:59:14,583 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 11:59:14,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2019-12-07 11:59:14,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 670. [2019-12-07 11:59:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2019-12-07 11:59:14,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 895 transitions. [2019-12-07 11:59:14,594 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 895 transitions. Word has length 155 [2019-12-07 11:59:14,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:59:14,594 INFO L462 AbstractCegarLoop]: Abstraction has 670 states and 895 transitions. [2019-12-07 11:59:14,594 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:59:14,594 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 895 transitions. [2019-12-07 11:59:14,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-12-07 11:59:14,595 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:59:14,596 INFO L410 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 5, 5, 3, 3, 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, 1, 1, 1] [2019-12-07 11:59:14,596 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:59:14,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:14,596 INFO L82 PathProgramCache]: Analyzing trace with hash 713053367, now seen corresponding path program 1 times [2019-12-07 11:59:14,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:59:14,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235200894] [2019-12-07 11:59:14,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2019-12-07 11:59:14,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235200894] [2019-12-07 11:59:14,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:59:14,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:59:14,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797150886] [2019-12-07 11:59:14,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:59:14,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:59:14,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:59:14,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:59:14,630 INFO L87 Difference]: Start difference. First operand 670 states and 895 transitions. Second operand 3 states. [2019-12-07 11:59:14,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:59:14,705 INFO L93 Difference]: Finished difference Result 1412 states and 1886 transitions. [2019-12-07 11:59:14,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:59:14,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-12-07 11:59:14,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:59:14,708 INFO L225 Difference]: With dead ends: 1412 [2019-12-07 11:59:14,708 INFO L226 Difference]: Without dead ends: 745 [2019-12-07 11:59:14,709 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 11:59:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2019-12-07 11:59:14,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 739. [2019-12-07 11:59:14,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2019-12-07 11:59:14,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 973 transitions. [2019-12-07 11:59:14,720 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 973 transitions. Word has length 175 [2019-12-07 11:59:14,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:59:14,720 INFO L462 AbstractCegarLoop]: Abstraction has 739 states and 973 transitions. [2019-12-07 11:59:14,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:59:14,720 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 973 transitions. [2019-12-07 11:59:14,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-12-07 11:59:14,722 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:59:14,722 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 6, 6, 4, 4, 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, 1, 1, 1, 1] [2019-12-07 11:59:14,722 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:59:14,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:14,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1240423273, now seen corresponding path program 1 times [2019-12-07 11:59:14,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:59:14,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296448642] [2019-12-07 11:59:14,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2019-12-07 11:59:14,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296448642] [2019-12-07 11:59:14,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:59:14,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 11:59:14,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706627306] [2019-12-07 11:59:14,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 11:59:14,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:59:14,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:59:14,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:59:14,778 INFO L87 Difference]: Start difference. First operand 739 states and 973 transitions. Second operand 4 states. [2019-12-07 11:59:14,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:59:14,887 INFO L93 Difference]: Finished difference Result 1649 states and 2189 transitions. [2019-12-07 11:59:14,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:59:14,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2019-12-07 11:59:14,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:59:14,891 INFO L225 Difference]: With dead ends: 1649 [2019-12-07 11:59:14,891 INFO L226 Difference]: Without dead ends: 913 [2019-12-07 11:59:14,892 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:59:14,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2019-12-07 11:59:14,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 901. [2019-12-07 11:59:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2019-12-07 11:59:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1156 transitions. [2019-12-07 11:59:14,907 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1156 transitions. Word has length 196 [2019-12-07 11:59:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:59:14,907 INFO L462 AbstractCegarLoop]: Abstraction has 901 states and 1156 transitions. [2019-12-07 11:59:14,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 11:59:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1156 transitions. [2019-12-07 11:59:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-12-07 11:59:14,909 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:59:14,909 INFO L410 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 7, 7, 5, 5, 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, 1] [2019-12-07 11:59:14,909 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:59:14,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:14,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1147741424, now seen corresponding path program 1 times [2019-12-07 11:59:14,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:59:14,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713292524] [2019-12-07 11:59:14,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:14,975 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2019-12-07 11:59:14,975 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713292524] [2019-12-07 11:59:14,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:59:14,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 11:59:14,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207953555] [2019-12-07 11:59:14,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 11:59:14,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:59:14,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:59:14,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:59:14,976 INFO L87 Difference]: Start difference. First operand 901 states and 1156 transitions. Second operand 4 states. [2019-12-07 11:59:15,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:59:15,105 INFO L93 Difference]: Finished difference Result 2003 states and 2615 transitions. [2019-12-07 11:59:15,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:59:15,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 223 [2019-12-07 11:59:15,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:59:15,110 INFO L225 Difference]: With dead ends: 2003 [2019-12-07 11:59:15,110 INFO L226 Difference]: Without dead ends: 1105 [2019-12-07 11:59:15,111 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:59:15,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2019-12-07 11:59:15,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1093. [2019-12-07 11:59:15,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2019-12-07 11:59:15,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1369 transitions. [2019-12-07 11:59:15,129 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1369 transitions. Word has length 223 [2019-12-07 11:59:15,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:59:15,129 INFO L462 AbstractCegarLoop]: Abstraction has 1093 states and 1369 transitions. [2019-12-07 11:59:15,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 11:59:15,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1369 transitions. [2019-12-07 11:59:15,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-12-07 11:59:15,132 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:59:15,132 INFO L410 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:15,132 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:59:15,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:15,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1435308780, now seen corresponding path program 1 times [2019-12-07 11:59:15,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:59:15,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217552390] [2019-12-07 11:59:15,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 562 proven. 78 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2019-12-07 11:59:15,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217552390] [2019-12-07 11:59:15,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167236046] [2019-12-07 11:59:15,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/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 11:59:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:15,296 INFO L264 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 11:59:15,301 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 471 proven. 169 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2019-12-07 11:59:15,371 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:59:15,429 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2019-12-07 11:59:15,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:59:15,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 8 [2019-12-07 11:59:15,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424431556] [2019-12-07 11:59:15,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:59:15,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:59:15,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:59:15,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-12-07 11:59:15,430 INFO L87 Difference]: Start difference. First operand 1093 states and 1369 transitions. Second operand 3 states. [2019-12-07 11:59:15,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:59:15,514 INFO L93 Difference]: Finished difference Result 2245 states and 2839 transitions. [2019-12-07 11:59:15,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:59:15,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 256 [2019-12-07 11:59:15,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:59:15,519 INFO L225 Difference]: With dead ends: 2245 [2019-12-07 11:59:15,519 INFO L226 Difference]: Without dead ends: 1155 [2019-12-07 11:59:15,520 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-12-07 11:59:15,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2019-12-07 11:59:15,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1144. [2019-12-07 11:59:15,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1144 states. [2019-12-07 11:59:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1456 transitions. [2019-12-07 11:59:15,538 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1456 transitions. Word has length 256 [2019-12-07 11:59:15,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:59:15,538 INFO L462 AbstractCegarLoop]: Abstraction has 1144 states and 1456 transitions. [2019-12-07 11:59:15,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:59:15,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1456 transitions. [2019-12-07 11:59:15,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-12-07 11:59:15,541 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:59:15,541 INFO L410 BasicCegarLoop]: trace histogram [15, 14, 14, 13, 13, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-12-07 11:59:15,741 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:59:15,742 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:59:15,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:15,742 INFO L82 PathProgramCache]: Analyzing trace with hash -951647703, now seen corresponding path program 1 times [2019-12-07 11:59:15,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:59:15,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050831505] [2019-12-07 11:59:15,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2019-12-07 11:59:15,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050831505] [2019-12-07 11:59:15,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:59:15,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:59:15,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301961446] [2019-12-07 11:59:15,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:59:15,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:59:15,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:59:15,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:59:15,798 INFO L87 Difference]: Start difference. First operand 1144 states and 1456 transitions. Second operand 3 states. [2019-12-07 11:59:15,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:59:15,911 INFO L93 Difference]: Finished difference Result 2378 states and 3068 transitions. [2019-12-07 11:59:15,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:59:15,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 256 [2019-12-07 11:59:15,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:59:15,916 INFO L225 Difference]: With dead ends: 2378 [2019-12-07 11:59:15,916 INFO L226 Difference]: Without dead ends: 1228 [2019-12-07 11:59:15,917 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 11:59:15,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2019-12-07 11:59:15,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1198. [2019-12-07 11:59:15,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2019-12-07 11:59:15,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1537 transitions. [2019-12-07 11:59:15,937 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1537 transitions. Word has length 256 [2019-12-07 11:59:15,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:59:15,937 INFO L462 AbstractCegarLoop]: Abstraction has 1198 states and 1537 transitions. [2019-12-07 11:59:15,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:59:15,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1537 transitions. [2019-12-07 11:59:15,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2019-12-07 11:59:15,939 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:59:15,939 INFO L410 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 8, 6, 6, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:59:15,939 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:59:15,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:15,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1593741344, now seen corresponding path program 1 times [2019-12-07 11:59:15,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:59:15,940 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989215741] [2019-12-07 11:59:15,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 564 proven. 84 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2019-12-07 11:59:16,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989215741] [2019-12-07 11:59:16,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196002593] [2019-12-07 11:59:16,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:59:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:16,089 INFO L264 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 11:59:16,094 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 473 proven. 175 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2019-12-07 11:59:16,171 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:59:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2019-12-07 11:59:16,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:59:16,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 8 [2019-12-07 11:59:16,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980886444] [2019-12-07 11:59:16,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:59:16,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:59:16,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:59:16,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-12-07 11:59:16,214 INFO L87 Difference]: Start difference. First operand 1198 states and 1537 transitions. Second operand 3 states. [2019-12-07 11:59:16,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:59:16,299 INFO L93 Difference]: Finished difference Result 2404 states and 3085 transitions. [2019-12-07 11:59:16,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:59:16,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 257 [2019-12-07 11:59:16,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:59:16,303 INFO L225 Difference]: With dead ends: 2404 [2019-12-07 11:59:16,303 INFO L226 Difference]: Without dead ends: 1209 [2019-12-07 11:59:16,305 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-12-07 11:59:16,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2019-12-07 11:59:16,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1198. [2019-12-07 11:59:16,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2019-12-07 11:59:16,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1534 transitions. [2019-12-07 11:59:16,322 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1534 transitions. Word has length 257 [2019-12-07 11:59:16,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:59:16,322 INFO L462 AbstractCegarLoop]: Abstraction has 1198 states and 1534 transitions. [2019-12-07 11:59:16,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:59:16,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1534 transitions. [2019-12-07 11:59:16,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2019-12-07 11:59:16,324 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:59:16,324 INFO L410 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 10, 10, 8, 8, 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, 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] [2019-12-07 11:59:16,524 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:59:16,525 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:59:16,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:16,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1734486918, now seen corresponding path program 2 times [2019-12-07 11:59:16,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:59:16,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577338271] [2019-12-07 11:59:16,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 682 proven. 66 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2019-12-07 11:59:16,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577338271] [2019-12-07 11:59:16,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127612523] [2019-12-07 11:59:16,645 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:59:16,708 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-12-07 11:59:16,708 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:59:16,709 INFO L264 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:59:16,712 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 516 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2019-12-07 11:59:16,764 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:59:16,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 516 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2019-12-07 11:59:16,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:59:16,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2019-12-07 11:59:16,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311125930] [2019-12-07 11:59:16,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 11:59:16,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:59:16,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:59:16,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 11:59:16,802 INFO L87 Difference]: Start difference. First operand 1198 states and 1534 transitions. Second operand 4 states. [2019-12-07 11:59:16,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:59:16,917 INFO L93 Difference]: Finished difference Result 2531 states and 3284 transitions. [2019-12-07 11:59:16,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:59:16,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2019-12-07 11:59:16,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:59:16,921 INFO L225 Difference]: With dead ends: 2531 [2019-12-07 11:59:16,921 INFO L226 Difference]: Without dead ends: 1336 [2019-12-07 11:59:16,922 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 11:59:16,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2019-12-07 11:59:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1303. [2019-12-07 11:59:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1303 states. [2019-12-07 11:59:16,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1648 transitions. [2019-12-07 11:59:16,940 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1648 transitions. Word has length 269 [2019-12-07 11:59:16,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:59:16,941 INFO L462 AbstractCegarLoop]: Abstraction has 1303 states and 1648 transitions. [2019-12-07 11:59:16,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 11:59:16,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1648 transitions. [2019-12-07 11:59:16,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2019-12-07 11:59:16,943 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:59:16,943 INFO L410 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:59:17,143 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:59:17,144 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:59:17,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:17,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1107629833, now seen corresponding path program 1 times [2019-12-07 11:59:17,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:59:17,144 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626129743] [2019-12-07 11:59:17,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1163 backedges. 616 proven. 240 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2019-12-07 11:59:17,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626129743] [2019-12-07 11:59:17,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852801512] [2019-12-07 11:59:17,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:59:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:17,361 INFO L264 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 11:59:17,363 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:17,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1163 backedges. 611 proven. 13 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2019-12-07 11:59:17,428 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:59:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1163 backedges. 611 proven. 13 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2019-12-07 11:59:17,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1671169492] [2019-12-07 11:59:17,486 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2019-12-07 11:59:17,487 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:59:17,487 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 11:59:17,487 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 11:59:17,487 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 11:59:23,799 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 11:59:24,236 WARN L192 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 145 [2019-12-07 11:59:24,621 WARN L192 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 140 [2019-12-07 11:59:25,085 WARN L192 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 145 [2019-12-07 11:59:25,506 WARN L192 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 151 [2019-12-07 11:59:26,025 WARN L192 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 156 [2019-12-07 11:59:26,592 WARN L192 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 158 [2019-12-07 11:59:27,774 WARN L192 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 181 DAG size of output: 162 [2019-12-07 11:59:29,036 WARN L192 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 183 DAG size of output: 164 [2019-12-07 11:59:29,461 WARN L192 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2019-12-07 11:59:29,861 WARN L192 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 146 [2019-12-07 11:59:30,285 WARN L192 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 149 [2019-12-07 11:59:30,724 WARN L192 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 152 [2019-12-07 11:59:31,192 WARN L192 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 155 [2019-12-07 11:59:31,646 WARN L192 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 143 [2019-12-07 11:59:32,103 WARN L192 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 149 [2019-12-07 11:59:32,614 WARN L192 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 158 [2019-12-07 11:59:33,108 WARN L192 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 161 [2019-12-07 11:59:33,605 WARN L192 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 143 [2019-12-07 11:59:34,091 WARN L192 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 147 [2019-12-07 11:59:34,627 WARN L192 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2019-12-07 11:59:35,152 WARN L192 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 167 [2019-12-07 11:59:35,640 WARN L192 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 143 [2019-12-07 11:59:36,137 WARN L192 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 145 [2019-12-07 11:59:36,670 WARN L192 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 158 [2019-12-07 11:59:37,249 WARN L192 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 157 [2019-12-07 11:59:37,886 WARN L192 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 170 [2019-12-07 11:59:38,516 WARN L192 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 173 [2019-12-07 11:59:39,086 WARN L192 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 143 [2019-12-07 11:59:39,609 WARN L192 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 148 [2019-12-07 11:59:40,171 WARN L192 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 149 [2019-12-07 11:59:40,854 WARN L192 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 176 [2019-12-07 11:59:41,502 WARN L192 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 179 [2019-12-07 11:59:42,092 WARN L192 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 143 [2019-12-07 11:59:42,663 WARN L192 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 144 [2019-12-07 11:59:43,217 WARN L192 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 147 [2019-12-07 11:59:44,089 WARN L192 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 182 [2019-12-07 11:59:44,790 WARN L192 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 185 [2019-12-07 11:59:45,410 WARN L192 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 143 [2019-12-07 11:59:46,106 WARN L192 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 144 [2019-12-07 11:59:46,858 WARN L192 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2019-12-07 11:59:47,706 WARN L192 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2019-12-07 11:59:48,533 WARN L192 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2019-12-07 11:59:49,317 WARN L192 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 197 [2019-12-07 11:59:50,131 WARN L192 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 200 [2019-12-07 11:59:50,948 WARN L192 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 203 [2019-12-07 11:59:51,632 WARN L192 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 143 [2019-12-07 11:59:52,268 WARN L192 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 143 [2019-12-07 11:59:53,179 WARN L192 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2019-12-07 11:59:54,036 WARN L192 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 208 [2019-12-07 11:59:54,943 WARN L192 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 211 [2019-12-07 11:59:55,843 WARN L192 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 214 [2019-12-07 11:59:56,600 WARN L192 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 142 [2019-12-07 11:59:57,341 WARN L192 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 143 [2019-12-07 11:59:58,085 WARN L192 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 155 [2019-12-07 11:59:58,853 WARN L192 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 157 [2019-12-07 11:59:59,856 WARN L192 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 217 [2019-12-07 12:00:00,803 WARN L192 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 220 [2019-12-07 12:00:01,689 WARN L192 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 142 [2019-12-07 12:00:02,411 WARN L192 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 143 [2019-12-07 12:00:03,642 WARN L192 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 241 [2019-12-07 12:00:04,853 WARN L192 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 244 [2019-12-07 12:00:06,065 WARN L192 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 247 [2019-12-07 12:00:07,314 WARN L192 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 250 [2019-12-07 12:00:08,347 WARN L192 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 164 [2019-12-07 12:00:09,432 WARN L192 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 165 [2019-12-07 12:00:09,549 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 12:00:09,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:00:09,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2019-12-07 12:00:09,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002680454] [2019-12-07 12:00:09,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 12:00:09,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:00:09,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 12:00:09,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1084, Invalid=4466, Unknown=0, NotChecked=0, Total=5550 [2019-12-07 12:00:09,552 INFO L87 Difference]: Start difference. First operand 1303 states and 1648 transitions. Second operand 10 states. [2019-12-07 12:00:10,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:00:10,568 INFO L93 Difference]: Finished difference Result 4330 states and 5437 transitions. [2019-12-07 12:00:10,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-12-07 12:00:10,569 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 293 [2019-12-07 12:00:10,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:00:10,573 INFO L225 Difference]: With dead ends: 4330 [2019-12-07 12:00:10,574 INFO L226 Difference]: Without dead ends: 1062 [2019-12-07 12:00:10,578 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 804 SyntacticMatches, 15 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2610 ImplicationChecksByTransitivity, 46.1s TimeCoverageRelationStatistics Valid=1195, Invalid=6115, Unknown=0, NotChecked=0, Total=7310 [2019-12-07 12:00:10,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2019-12-07 12:00:10,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 812. [2019-12-07 12:00:10,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2019-12-07 12:00:10,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 969 transitions. [2019-12-07 12:00:10,592 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 969 transitions. Word has length 293 [2019-12-07 12:00:10,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:00:10,592 INFO L462 AbstractCegarLoop]: Abstraction has 812 states and 969 transitions. [2019-12-07 12:00:10,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 12:00:10,593 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 969 transitions. [2019-12-07 12:00:10,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2019-12-07 12:00:10,594 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:00:10,595 INFO L410 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 14, 14, 12, 12, 10, 10, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 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 12:00:10,795 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:00:10,795 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:00:10,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:00:10,796 INFO L82 PathProgramCache]: Analyzing trace with hash 2084665138, now seen corresponding path program 1 times [2019-12-07 12:00:10,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:00:10,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782296324] [2019-12-07 12:00:10,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:00:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:00:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 870 proven. 29 refuted. 0 times theorem prover too weak. 1294 trivial. 0 not checked. [2019-12-07 12:00:10,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782296324] [2019-12-07 12:00:10,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960609525] [2019-12-07 12:00:10,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:00:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:00:10,981 INFO L264 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:00:10,984 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:00:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 870 proven. 29 refuted. 0 times theorem prover too weak. 1294 trivial. 0 not checked. [2019-12-07 12:00:11,085 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:00:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 870 proven. 29 refuted. 0 times theorem prover too weak. 1294 trivial. 0 not checked. [2019-12-07 12:00:11,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1026988736] [2019-12-07 12:00:11,172 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2019-12-07 12:00:11,172 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:00:11,172 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 12:00:11,172 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 12:00:11,172 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 12:00:17,428 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 12:00:17,855 WARN L192 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 145 [2019-12-07 12:00:18,216 WARN L192 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 140 [2019-12-07 12:00:18,616 WARN L192 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 145 [2019-12-07 12:00:19,016 WARN L192 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 151 [2019-12-07 12:00:19,506 WARN L192 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 156 [2019-12-07 12:00:20,038 WARN L192 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 158 [2019-12-07 12:00:20,745 WARN L192 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 153 [2019-12-07 12:00:21,445 WARN L192 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 155 [2019-12-07 12:00:21,897 WARN L192 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2019-12-07 12:00:22,332 WARN L192 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 146 [2019-12-07 12:00:22,743 WARN L192 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 149 [2019-12-07 12:00:23,174 WARN L192 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 152 [2019-12-07 12:00:23,618 WARN L192 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 155 [2019-12-07 12:00:24,048 WARN L192 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 143 [2019-12-07 12:00:24,480 WARN L192 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 149 [2019-12-07 12:00:24,985 WARN L192 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 158 [2019-12-07 12:00:25,474 WARN L192 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 161 [2019-12-07 12:00:26,028 WARN L192 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 143 [2019-12-07 12:00:26,584 WARN L192 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 147 [2019-12-07 12:00:27,247 WARN L192 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2019-12-07 12:00:27,815 WARN L192 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 167 [2019-12-07 12:00:28,371 WARN L192 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 170 [2019-12-07 12:00:28,945 WARN L192 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 173 [2019-12-07 12:00:29,545 WARN L192 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 176 [2019-12-07 12:00:30,148 WARN L192 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 179 [2019-12-07 12:00:30,784 WARN L192 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 182 [2019-12-07 12:00:31,423 WARN L192 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 185 [2019-12-07 12:00:32,131 WARN L192 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2019-12-07 12:00:32,778 WARN L192 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2019-12-07 12:00:33,483 WARN L192 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2019-12-07 12:00:34,246 WARN L192 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 197 [2019-12-07 12:00:34,962 WARN L192 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 200 [2019-12-07 12:00:35,851 WARN L192 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 203 [2019-12-07 12:00:36,797 WARN L192 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 206 [2019-12-07 12:00:37,683 WARN L192 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 208 [2019-12-07 12:00:38,629 WARN L192 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 211 [2019-12-07 12:00:39,593 WARN L192 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 214 [2019-12-07 12:00:40,442 WARN L192 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 217 [2019-12-07 12:00:41,378 WARN L192 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 220 [2019-12-07 12:00:42,491 WARN L192 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 241 [2019-12-07 12:00:43,567 WARN L192 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 244 [2019-12-07 12:00:44,454 WARN L192 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 161 [2019-12-07 12:00:45,215 WARN L192 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 162 [2019-12-07 12:00:46,345 WARN L192 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 247 [2019-12-07 12:00:47,504 WARN L192 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 250 [2019-12-07 12:00:48,461 WARN L192 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 164 [2019-12-07 12:00:49,419 WARN L192 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 165 [2019-12-07 12:00:50,147 WARN L192 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 143 [2019-12-07 12:00:50,761 WARN L192 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 145 [2019-12-07 12:00:51,388 WARN L192 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 158 [2019-12-07 12:00:52,100 WARN L192 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 157 [2019-12-07 12:00:52,848 WARN L192 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 143 [2019-12-07 12:00:53,639 WARN L192 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 148 [2019-12-07 12:00:54,275 WARN L192 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 149 [2019-12-07 12:00:54,942 WARN L192 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 143 [2019-12-07 12:00:55,574 WARN L192 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 144 [2019-12-07 12:00:56,196 WARN L192 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 147 [2019-12-07 12:00:56,909 WARN L192 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 143 [2019-12-07 12:00:57,686 WARN L192 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 144 [2019-12-07 12:00:58,679 WARN L192 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 143 [2019-12-07 12:00:59,454 WARN L192 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 143 [2019-12-07 12:01:00,296 WARN L192 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 142 [2019-12-07 12:01:01,018 WARN L192 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 143 [2019-12-07 12:01:01,795 WARN L192 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 155 [2019-12-07 12:01:02,581 WARN L192 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 157 [2019-12-07 12:01:03,451 WARN L192 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 142 [2019-12-07 12:01:04,175 WARN L192 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 143 [2019-12-07 12:01:04,340 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 12:01:04,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:01:04,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2019-12-07 12:01:04,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049741532] [2019-12-07 12:01:04,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 12:01:04,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:01:04,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 12:01:04,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1022, Invalid=4234, Unknown=0, NotChecked=0, Total=5256 [2019-12-07 12:01:04,343 INFO L87 Difference]: Start difference. First operand 812 states and 969 transitions. Second operand 6 states. [2019-12-07 12:01:04,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:01:04,475 INFO L93 Difference]: Finished difference Result 923 states and 1099 transitions. [2019-12-07 12:01:04,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:01:04,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 413 [2019-12-07 12:01:04,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:01:04,475 INFO L225 Difference]: With dead ends: 923 [2019-12-07 12:01:04,475 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 12:01:04,477 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1245 GetRequests, 1153 SyntacticMatches, 19 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2122 ImplicationChecksByTransitivity, 46.9s TimeCoverageRelationStatistics Valid=1032, Invalid=4518, Unknown=0, NotChecked=0, Total=5550 [2019-12-07 12:01:04,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 12:01:04,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 12:01:04,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 12:01:04,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 12:01:04,478 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 413 [2019-12-07 12:01:04,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:01:04,478 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:01:04,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 12:01:04,478 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 12:01:04,478 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 12:01:04,678 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:01:04,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 12:01:05,167 WARN L192 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2019-12-07 12:01:05,806 WARN L192 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-12-07 12:01:05,857 INFO L242 CegarLoopResult]: At program point L168(lines 164 498) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse1 (< 4432 ULTIMATE.start_ssl3_connect_~s__state~0))) (or (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) .cse1) (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0) .cse1))) [2019-12-07 12:01:05,857 INFO L246 CegarLoopResult]: For program point L170(lines 170 496) no Hoare annotation was computed. [2019-12-07 12:01:05,857 INFO L246 CegarLoopResult]: For program point L137(lines 137 507) no Hoare annotation was computed. [2019-12-07 12:01:05,857 INFO L246 CegarLoopResult]: For program point L104(lines 104 518) no Hoare annotation was computed. [2019-12-07 12:01:05,857 INFO L242 CegarLoopResult]: At program point L138(lines 134 508) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse1 (not (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (not (= 4401 ULTIMATE.start_ssl3_connect_~s__state~0)))) (or (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) .cse1 .cse2) (and .cse0 (or (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (= ULTIMATE.start_ssl3_connect_~blastFlag~0 3)) (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0) .cse1 .cse2))) [2019-12-07 12:01:05,857 INFO L246 CegarLoopResult]: For program point L238(lines 238 241) no Hoare annotation was computed. [2019-12-07 12:01:05,857 INFO L246 CegarLoopResult]: For program point L304-2(lines 201 484) no Hoare annotation was computed. [2019-12-07 12:01:05,857 INFO L246 CegarLoopResult]: For program point L404(lines 404 406) no Hoare annotation was computed. [2019-12-07 12:01:05,857 INFO L246 CegarLoopResult]: For program point L371(lines 371 373) no Hoare annotation was computed. [2019-12-07 12:01:05,858 INFO L242 CegarLoopResult]: At program point L206(lines 104 518) the Hoare annotation is: (and (or (= ULTIMATE.start_ssl3_connect_~blastFlag~0 0) (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2)) (not (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= 4401 ULTIMATE.start_ssl3_connect_~s__state~0))) [2019-12-07 12:01:05,858 INFO L246 CegarLoopResult]: For program point L173(lines 173 495) no Hoare annotation was computed. [2019-12-07 12:01:05,858 INFO L246 CegarLoopResult]: For program point L140(lines 140 506) no Hoare annotation was computed. [2019-12-07 12:01:05,858 INFO L246 CegarLoopResult]: For program point L107(lines 107 517) no Hoare annotation was computed. [2019-12-07 12:01:05,858 INFO L242 CegarLoopResult]: At program point L174(lines 170 496) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse1 (< 4432 ULTIMATE.start_ssl3_connect_~s__state~0))) (or (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) .cse1) (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0) .cse1))) [2019-12-07 12:01:05,858 INFO L249 CegarLoopResult]: At program point L539(lines 97 540) the Hoare annotation is: true [2019-12-07 12:01:05,858 INFO L246 CegarLoopResult]: For program point L176(lines 176 494) no Hoare annotation was computed. [2019-12-07 12:01:05,858 INFO L246 CegarLoopResult]: For program point L143(lines 143 505) no Hoare annotation was computed. [2019-12-07 12:01:05,858 INFO L246 CegarLoopResult]: For program point L110(lines 110 516) no Hoare annotation was computed. [2019-12-07 12:01:05,858 INFO L242 CegarLoopResult]: At program point L144(lines 140 506) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse1 (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0))) (or (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0) .cse1) (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) .cse1))) [2019-12-07 12:01:05,858 INFO L246 CegarLoopResult]: For program point L179(lines 179 493) no Hoare annotation was computed. [2019-12-07 12:01:05,858 INFO L246 CegarLoopResult]: For program point L146(lines 146 504) no Hoare annotation was computed. [2019-12-07 12:01:05,859 INFO L246 CegarLoopResult]: For program point L113(lines 113 515) no Hoare annotation was computed. [2019-12-07 12:01:05,859 INFO L246 CegarLoopResult]: For program point L444(lines 444 455) no Hoare annotation was computed. [2019-12-07 12:01:05,859 INFO L246 CegarLoopResult]: For program point L444-2(lines 444 455) no Hoare annotation was computed. [2019-12-07 12:01:05,859 INFO L246 CegarLoopResult]: For program point L312(lines 312 315) no Hoare annotation was computed. [2019-12-07 12:01:05,859 INFO L242 CegarLoopResult]: At program point L180(lines 176 494) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse1 (< 4432 ULTIMATE.start_ssl3_connect_~s__state~0))) (or (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) .cse1) (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0) .cse1))) [2019-12-07 12:01:05,859 INFO L246 CegarLoopResult]: For program point L347(lines 347 349) no Hoare annotation was computed. [2019-12-07 12:01:05,859 INFO L246 CegarLoopResult]: For program point L182(lines 182 492) no Hoare annotation was computed. [2019-12-07 12:01:05,859 INFO L246 CegarLoopResult]: For program point L149(lines 149 503) no Hoare annotation was computed. [2019-12-07 12:01:05,859 INFO L246 CegarLoopResult]: For program point L116(lines 116 514) no Hoare annotation was computed. [2019-12-07 12:01:05,859 INFO L246 CegarLoopResult]: For program point L381(lines 381 383) no Hoare annotation was computed. [2019-12-07 12:01:05,859 INFO L246 CegarLoopResult]: For program point L282(lines 282 296) no Hoare annotation was computed. [2019-12-07 12:01:05,859 INFO L246 CegarLoopResult]: For program point L216(lines 216 219) no Hoare annotation was computed. [2019-12-07 12:01:05,859 INFO L246 CegarLoopResult]: For program point L282-2(lines 282 296) no Hoare annotation was computed. [2019-12-07 12:01:05,859 INFO L242 CegarLoopResult]: At program point L150(lines 146 504) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse1 (< 4432 ULTIMATE.start_ssl3_connect_~s__state~0))) (or (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) .cse1) (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0) .cse1))) [2019-12-07 12:01:05,859 INFO L246 CegarLoopResult]: For program point L250-2(lines 201 484) no Hoare annotation was computed. [2019-12-07 12:01:05,860 INFO L246 CegarLoopResult]: For program point L449(lines 449 452) no Hoare annotation was computed. [2019-12-07 12:01:05,860 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 12:01:05,860 INFO L246 CegarLoopResult]: For program point L185(lines 185 491) no Hoare annotation was computed. [2019-12-07 12:01:05,860 INFO L246 CegarLoopResult]: For program point L152(lines 152 502) no Hoare annotation was computed. [2019-12-07 12:01:05,860 INFO L246 CegarLoopResult]: For program point L119(lines 119 513) no Hoare annotation was computed. [2019-12-07 12:01:05,860 INFO L249 CegarLoopResult]: At program point L549(lines 10 551) the Hoare annotation is: true [2019-12-07 12:01:05,860 INFO L242 CegarLoopResult]: At program point L186(lines 182 492) the Hoare annotation is: (let ((.cse0 (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0)) (.cse1 (< 4432 ULTIMATE.start_ssl3_connect_~s__state~0))) (or (and (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) .cse0 .cse1) (and (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) .cse1) (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 .cse1))) [2019-12-07 12:01:05,860 INFO L242 CegarLoopResult]: At program point L120(lines 116 514) the Hoare annotation is: (and (< ULTIMATE.start_ssl3_connect_~s__state~0 4384) (or (= ULTIMATE.start_ssl3_connect_~blastFlag~0 0) (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2))) [2019-12-07 12:01:05,860 INFO L242 CegarLoopResult]: At program point L485(lines 98 538) the Hoare annotation is: (let ((.cse4 (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse12 (= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0))) (let ((.cse0 (= 4416 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse8 (= 4368 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse7 (or .cse12 (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0))) (.cse5 (not .cse4)) (.cse6 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (.cse3 (= 4560 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse10 (= 4384 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse2 (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0)) (.cse9 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse1 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2)) (.cse11 (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0))) (or (and .cse0 .cse1) (and (or (and (not .cse2) .cse3) .cse4) (or .cse2 .cse5) .cse1) (and (or (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 3)) (and .cse0 .cse6)) .cse2) (and .cse7 .cse1 .cse3) (and .cse8 .cse1) (and (= ULTIMATE.start_ssl3_connect_~blastFlag~0 0) .cse8) (and .cse7 .cse9 .cse1 .cse5 (not (= 4401 ULTIMATE.start_ssl3_connect_~s__state~0))) (and (= ULTIMATE.start_ssl3_connect_~blastFlag~0 1) .cse10) (and .cse9 .cse6 .cse2 .cse11) (and .cse12 .cse3 .cse2) (and .cse1 .cse10) (and .cse12 .cse2 (or (= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (= 3 ULTIMATE.start_ssl3_connect_~s__state~0))) (and .cse9 .cse1 .cse11)))) [2019-12-07 12:01:05,860 INFO L246 CegarLoopResult]: For program point L320(lines 320 322) no Hoare annotation was computed. [2019-12-07 12:01:05,861 INFO L246 CegarLoopResult]: For program point L188(lines 188 490) no Hoare annotation was computed. [2019-12-07 12:01:05,861 INFO L246 CegarLoopResult]: For program point L155(lines 155 501) no Hoare annotation was computed. [2019-12-07 12:01:05,861 INFO L246 CegarLoopResult]: For program point L122(lines 122 512) no Hoare annotation was computed. [2019-12-07 12:01:05,861 INFO L242 CegarLoopResult]: At program point L321(lines 75 550) the Hoare annotation is: false [2019-12-07 12:01:05,861 INFO L246 CegarLoopResult]: For program point L387-2(lines 201 484) no Hoare annotation was computed. [2019-12-07 12:01:05,861 INFO L246 CegarLoopResult]: For program point L222(lines 222 233) no Hoare annotation was computed. [2019-12-07 12:01:05,861 INFO L246 CegarLoopResult]: For program point L222-2(lines 201 484) no Hoare annotation was computed. [2019-12-07 12:01:05,861 INFO L246 CegarLoopResult]: For program point L520(lines 520 536) no Hoare annotation was computed. [2019-12-07 12:01:05,861 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 12:01:05,861 INFO L246 CegarLoopResult]: For program point L289-2(lines 284 296) no Hoare annotation was computed. [2019-12-07 12:01:05,861 INFO L246 CegarLoopResult]: For program point L521(lines 521 535) no Hoare annotation was computed. [2019-12-07 12:01:05,861 INFO L246 CegarLoopResult]: For program point L356(lines 356 358) no Hoare annotation was computed. [2019-12-07 12:01:05,861 INFO L246 CegarLoopResult]: For program point L323(lines 323 325) no Hoare annotation was computed. [2019-12-07 12:01:05,862 INFO L246 CegarLoopResult]: For program point L224(lines 224 227) no Hoare annotation was computed. [2019-12-07 12:01:05,862 INFO L246 CegarLoopResult]: For program point L191(lines 191 489) no Hoare annotation was computed. [2019-12-07 12:01:05,862 INFO L246 CegarLoopResult]: For program point L158(lines 158 500) no Hoare annotation was computed. [2019-12-07 12:01:05,862 INFO L246 CegarLoopResult]: For program point L125(lines 125 511) no Hoare annotation was computed. [2019-12-07 12:01:05,862 INFO L246 CegarLoopResult]: For program point L522(lines 522 527) no Hoare annotation was computed. [2019-12-07 12:01:05,862 INFO L246 CegarLoopResult]: For program point L522-2(lines 521 535) no Hoare annotation was computed. [2019-12-07 12:01:05,862 INFO L242 CegarLoopResult]: At program point L192(lines 188 490) the Hoare annotation is: (let ((.cse1 (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0)) (.cse2 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2)) (.cse0 (= 4560 ULTIMATE.start_ssl3_connect_~s__state~0))) (or (and (= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) .cse0 .cse1) (and (not .cse1) .cse2 .cse0) (and .cse2 (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0) .cse0))) [2019-12-07 12:01:05,862 INFO L242 CegarLoopResult]: At program point L126(lines 122 512) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528) (not (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0)) (or (= ULTIMATE.start_ssl3_connect_~blastFlag~0 1) (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2)) (not (= 4401 ULTIMATE.start_ssl3_connect_~s__state~0))) [2019-12-07 12:01:05,862 INFO L246 CegarLoopResult]: For program point L524(lines 524 526) no Hoare annotation was computed. [2019-12-07 12:01:05,862 INFO L242 CegarLoopResult]: At program point L194(lines 194 488) the Hoare annotation is: (let ((.cse3 (= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0))) (let ((.cse0 (or .cse3 (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0))) (.cse1 (not (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (not (= 4401 ULTIMATE.start_ssl3_connect_~s__state~0)))) (or (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) .cse1 .cse2) (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (= 3 ULTIMATE.start_ssl3_connect_~s__state~0)) (and .cse3 (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0) .cse1 .cse2) (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0)))) [2019-12-07 12:01:05,862 INFO L246 CegarLoopResult]: For program point L161(lines 161 499) no Hoare annotation was computed. [2019-12-07 12:01:05,862 INFO L246 CegarLoopResult]: For program point L128(lines 128 510) no Hoare annotation was computed. [2019-12-07 12:01:05,862 INFO L246 CegarLoopResult]: For program point L228(lines 228 231) no Hoare annotation was computed. [2019-12-07 12:01:05,863 INFO L242 CegarLoopResult]: At program point L162(lines 152 502) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse1 (< 4432 ULTIMATE.start_ssl3_connect_~s__state~0))) (or (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) .cse1) (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4) (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0) .cse1))) [2019-12-07 12:01:05,863 INFO L246 CegarLoopResult]: For program point L164(lines 164 498) no Hoare annotation was computed. [2019-12-07 12:01:05,863 INFO L246 CegarLoopResult]: For program point L131(lines 131 509) no Hoare annotation was computed. [2019-12-07 12:01:05,863 INFO L246 CegarLoopResult]: For program point L98-1(lines 75 550) no Hoare annotation was computed. [2019-12-07 12:01:05,863 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 548) no Hoare annotation was computed. [2019-12-07 12:01:05,863 INFO L246 CegarLoopResult]: For program point L396(lines 396 399) no Hoare annotation was computed. [2019-12-07 12:01:05,863 INFO L242 CegarLoopResult]: At program point L132(lines 128 510) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528) (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2) (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0)) [2019-12-07 12:01:05,863 INFO L246 CegarLoopResult]: For program point L265-2(lines 201 484) no Hoare annotation was computed. [2019-12-07 12:01:05,863 INFO L246 CegarLoopResult]: For program point L431(lines 431 433) no Hoare annotation was computed. [2019-12-07 12:01:05,863 INFO L246 CegarLoopResult]: For program point L332(lines 332 334) no Hoare annotation was computed. [2019-12-07 12:01:05,863 INFO L246 CegarLoopResult]: For program point L167(lines 167 497) no Hoare annotation was computed. [2019-12-07 12:01:05,863 INFO L246 CegarLoopResult]: For program point L134(lines 134 508) no Hoare annotation was computed. [2019-12-07 12:01:05,864 INFO L242 CegarLoopResult]: At program point L101(lines 101 519) the Hoare annotation is: (let ((.cse4 (= 4400 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse13 (= 4560 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0))) (let ((.cse0 (= 4416 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse8 (= 4368 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse7 (or .cse13 (= 3 ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0))) (.cse5 (not .cse4)) (.cse9 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 0)) (.cse6 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 4)) (.cse3 (= 4560 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse11 (= 4384 ULTIMATE.start_ssl3_connect_~s__state~0)) (.cse2 (= 0 ULTIMATE.start_ssl3_connect_~s__hit~0)) (.cse10 (<= ULTIMATE.start_ssl3_connect_~s__state~0 4528)) (.cse1 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 2)) (.cse12 (<= 4432 ULTIMATE.start_ssl3_connect_~s__state~0))) (or (and .cse0 .cse1) (and (or (and (not .cse2) .cse3) .cse4) (or .cse2 .cse5) .cse1) (and (or (and .cse0 (= ULTIMATE.start_ssl3_connect_~blastFlag~0 3)) (and .cse0 .cse6)) .cse2) (and .cse7 .cse1 .cse3) (and .cse8 .cse1) (and .cse9 .cse8) (and .cse7 .cse10 .cse1 .cse5 (not (= 4401 ULTIMATE.start_ssl3_connect_~s__state~0))) (and (= ULTIMATE.start_ssl3_connect_~blastFlag~0 1) .cse11) (and .cse9 (= 12292 ULTIMATE.start_ssl3_connect_~s__state~0)) (and .cse10 .cse6 .cse2 .cse12) (and .cse13 .cse3 .cse2) (and .cse1 .cse11) (and .cse13 .cse2 (or (= 4352 ULTIMATE.start_ssl3_connect_~s__state~0) (= 3 ULTIMATE.start_ssl3_connect_~s__state~0))) (and .cse10 .cse1 .cse12)))) [2019-12-07 12:01:05,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:01:05 BoogieIcfgContainer [2019-12-07 12:01:05,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:01:05,885 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:01:05,885 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:01:05,885 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:01:05,885 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:58:48" (3/4) ... [2019-12-07 12:01:05,888 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 12:01:05,899 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2019-12-07 12:01:05,900 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 12:01:05,901 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 12:01:05,960 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1ad44ae5-eb2a-46cb-bfa3-6db9b2f4948d/bin/utaipan/witness.graphml [2019-12-07 12:01:05,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:01:05,961 INFO L168 Benchmark]: Toolchain (without parser) took 138117.15 ms. Allocated memory was 1.0 GB in the beginning and 1.7 GB in the end (delta: 691.5 MB). Free memory was 943.4 MB in the beginning and 1.4 GB in the end (delta: -449.1 MB). Peak memory consumption was 242.4 MB. Max. memory is 11.5 GB. [2019-12-07 12:01:05,961 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:01:05,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 81.3 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -124.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:01:05,961 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.17 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: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. [2019-12-07 12:01:05,961 INFO L168 Benchmark]: Boogie Preprocessor took 25.28 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 12:01:05,962 INFO L168 Benchmark]: RCFGBuilder took 607.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 960.0 MB in the end (delta: 100.6 MB). Peak memory consumption was 100.6 MB. Max. memory is 11.5 GB. [2019-12-07 12:01:05,962 INFO L168 Benchmark]: TraceAbstraction took 137106.20 ms. Allocated memory was 1.1 GB in the beginning and 1.7 GB in the end (delta: 610.3 MB). Free memory was 960.0 MB in the beginning and 1.4 GB in the end (delta: -456.6 MB). Peak memory consumption was 926.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:01:05,962 INFO L168 Benchmark]: Witness Printer took 75.19 ms. Allocated memory is still 1.7 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:01:05,963 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 259.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 81.3 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -124.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.17 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: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.28 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. * RCFGBuilder took 607.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 960.0 MB in the end (delta: 100.6 MB). Peak memory consumption was 100.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 137106.20 ms. Allocated memory was 1.1 GB in the beginning and 1.7 GB in the end (delta: 610.3 MB). Free memory was 960.0 MB in the beginning and 1.4 GB in the end (delta: -456.6 MB). Peak memory consumption was 926.7 MB. Max. memory is 11.5 GB. * Witness Printer took 75.19 ms. Allocated memory is still 1.7 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 548]: 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: 182]: Loop Invariant Derived loop invariant: (((blastFlag == 4 && 0 == s__hit) && 4432 < s__state) || (blastFlag == 2 && 4432 < s__state)) || (((4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0) && 0 == s__hit) && 4432 < s__state) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: (((((((((((((4416 == s__state && blastFlag == 2) || ((((!(0 == s__hit) && 4560 == s__state) || 4400 == s__state) && (0 == s__hit || !(4400 == s__state))) && blastFlag == 2)) || (((4416 == s__state && blastFlag == 3) || (4416 == s__state && blastFlag == 4)) && 0 == s__hit)) || (((4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0) && blastFlag == 2) && 4560 == s__state)) || (4368 == s__state && blastFlag == 2)) || (blastFlag == 0 && 4368 == s__state)) || (((((4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0) && s__state <= 4528) && blastFlag == 2) && !(4400 == s__state)) && !(4401 == s__state))) || (blastFlag == 1 && 4384 == s__state)) || (blastFlag == 0 && 12292 == s__state)) || (((s__state <= 4528 && blastFlag == 4) && 0 == s__hit) && 4432 <= s__state)) || ((4560 == s__s3__tmp__next_state___0 && 4560 == s__state) && 0 == s__hit)) || (blastFlag == 2 && 4384 == s__state)) || ((4560 == s__s3__tmp__next_state___0 && 0 == s__hit) && (4352 == s__state || 3 == s__state))) || ((s__state <= 4528 && blastFlag == 2) && 4432 <= s__state) - InvariantResult [Line: 140]: Loop Invariant Derived loop invariant: (((s__state <= 4528 && blastFlag == 4) && 0 == s__hit) && 4432 <= s__state) || ((s__state <= 4528 && blastFlag == 2) && 4432 <= s__state) - InvariantResult [Line: 75]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 164]: Loop Invariant Derived loop invariant: ((s__state <= 4528 && blastFlag == 2) && 4432 < s__state) || (((s__state <= 4528 && blastFlag == 4) && 0 == s__hit) && 4432 < s__state) - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: ((s__state <= 4528 && !(4400 == s__state)) && (blastFlag == 1 || blastFlag == 2)) && !(4401 == s__state) - InvariantResult [Line: 176]: Loop Invariant Derived loop invariant: ((s__state <= 4528 && blastFlag == 2) && 4432 < s__state) || (((s__state <= 4528 && blastFlag == 4) && 0 == s__hit) && 4432 < s__state) - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: (((s__state <= 4528 && blastFlag == 2) && !(4400 == s__state)) && !(4401 == s__state)) || ((((s__state <= 4528 && (blastFlag == 4 || blastFlag == 3)) && 0 == s__hit) && !(4400 == s__state)) && !(4401 == s__state)) - InvariantResult [Line: 188]: Loop Invariant Derived loop invariant: (((4560 == s__s3__tmp__next_state___0 && 4560 == s__state) && 0 == s__hit) || ((!(0 == s__hit) && blastFlag == 2) && 4560 == s__state)) || ((blastFlag == 2 && 3 == s__s3__tmp__next_state___0) && 4560 == s__state) - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: ((s__state <= 4528 && blastFlag == 2) && 4432 < s__state) || (((s__state <= 4528 && blastFlag == 4) && 0 == s__hit) && 4432 < s__state) - InvariantResult [Line: 152]: Loop Invariant Derived loop invariant: ((s__state <= 4528 && blastFlag == 2) && 4432 < s__state) || (((s__state <= 4528 && blastFlag == 4) && 0 == s__hit) && 4432 < s__state) - InvariantResult [Line: 194]: Loop Invariant Derived loop invariant: ((((((4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0) && blastFlag == 2) && !(4400 == s__state)) && !(4401 == s__state)) || (((4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0) && blastFlag == 4) && 3 == s__state)) || (((4560 == s__s3__tmp__next_state___0 && 0 == s__hit) && !(4400 == s__state)) && !(4401 == s__state))) || 4432 <= s__state - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: s__state < 4384 && (blastFlag == 0 || blastFlag == 2) - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: ((blastFlag == 0 || blastFlag == 2) && !(4400 == s__state)) && !(4401 == s__state) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 98]: Loop Invariant Derived loop invariant: ((((((((((((4416 == s__state && blastFlag == 2) || ((((!(0 == s__hit) && 4560 == s__state) || 4400 == s__state) && (0 == s__hit || !(4400 == s__state))) && blastFlag == 2)) || (((4416 == s__state && blastFlag == 3) || (4416 == s__state && blastFlag == 4)) && 0 == s__hit)) || (((4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0) && blastFlag == 2) && 4560 == s__state)) || (4368 == s__state && blastFlag == 2)) || (blastFlag == 0 && 4368 == s__state)) || (((((4560 == s__s3__tmp__next_state___0 || 3 == s__s3__tmp__next_state___0) && s__state <= 4528) && blastFlag == 2) && !(4400 == s__state)) && !(4401 == s__state))) || (blastFlag == 1 && 4384 == s__state)) || (((s__state <= 4528 && blastFlag == 4) && 0 == s__hit) && 4432 <= s__state)) || ((4560 == s__s3__tmp__next_state___0 && 4560 == s__state) && 0 == s__hit)) || (blastFlag == 2 && 4384 == s__state)) || ((4560 == s__s3__tmp__next_state___0 && 0 == s__hit) && (4352 == s__state || 3 == s__state))) || ((s__state <= 4528 && blastFlag == 2) && 4432 <= s__state) - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: ((s__state <= 4528 && blastFlag == 2) && 4432 < s__state) || (((s__state <= 4528 && blastFlag == 4) && 0 == s__hit) && 4432 < s__state) - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: (s__state <= 4528 && blastFlag == 2) && 0 == s__hit - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Result: SAFE, OverallTime: 135.8s, OverallIterations: 18, TraceHistogramMax: 18, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, HoareTripleCheckerStatistics: 2227 SDtfs, 1646 SDslu, 2713 SDs, 0 SdLazy, 3258 SolverSat, 482 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4298 GetRequests, 4005 SyntacticMatches, 56 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5207 ImplicationChecksByTransitivity, 111.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1303occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 531 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 19 PreInvPairs, 229 NumberOfFragments, 688 HoareAnnotationTreeSize, 19 FomulaSimplifications, 5718 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 19 FomulaSimplificationsInter, 1486 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 4707 NumberOfCodeBlocks, 4547 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 6386 ConstructedInterpolants, 0 QuantifiedInterpolants, 3094791 SizeOfPredicates, 52 NumberOfNonLiveVariables, 3091 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 34 InterpolantComputations, 17 PerfectInterpolantSequences, 22007/23453 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...