./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 390f2eba6fdf8824b99921adcaaa6cdc728c2d2b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:57:03,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:03,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:03,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:03,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:03,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:03,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:03,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:03,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:03,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:03,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:03,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:03,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:03,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:03,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:03,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:03,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:03,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:03,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:03,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:03,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:03,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:03,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:03,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:03,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:03,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:03,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:03,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:03,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:03,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:03,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:03,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:03,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:03,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:03,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:03,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:03,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:03,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:03,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:03,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:03,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:03,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:57:03,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:03,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:03,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:03,293 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:03,293 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:03,293 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:03,293 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:57:03,293 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:03,294 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:03,294 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:57:03,294 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:57:03,294 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:03,295 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:57:03,295 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:57:03,295 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:57:03,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:03,296 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:03,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:57:03,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:03,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:03,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:03,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:03,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:03,298 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:03,298 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:03,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:03,298 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:03,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:03,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:03,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:03,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:03,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:03,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:03,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:03,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:03,300 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:57:03,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:57:03,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:03,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:03,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:03,301 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 390f2eba6fdf8824b99921adcaaa6cdc728c2d2b [2020-11-22 12:57:03,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:03,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:03,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:03,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:03,631 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:03,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/bin/utaipan/../../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2020-11-22 12:57:03,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/bin/utaipan/data/829d73961/994d2ae1d72f466384dad77cbfb6512f/FLAG9f12ad6c7 [2020-11-22 12:57:04,299 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:04,300 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2020-11-22 12:57:04,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/bin/utaipan/data/829d73961/994d2ae1d72f466384dad77cbfb6512f/FLAG9f12ad6c7 [2020-11-22 12:57:04,642 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/bin/utaipan/data/829d73961/994d2ae1d72f466384dad77cbfb6512f [2020-11-22 12:57:04,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:04,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:04,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:04,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:04,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:04,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:04" (1/1) ... [2020-11-22 12:57:04,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38666ec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:04, skipping insertion in model container [2020-11-22 12:57:04,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:04" (1/1) ... [2020-11-22 12:57:04,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:04,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:04,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:04,986 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:05,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:05,061 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:05,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:05 WrapperNode [2020-11-22 12:57:05,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:05,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:05,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:05,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:05,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:05" (1/1) ... [2020-11-22 12:57:05,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:05" (1/1) ... [2020-11-22 12:57:05,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:05,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:05,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:05,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:05,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:05" (1/1) ... [2020-11-22 12:57:05,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:05" (1/1) ... [2020-11-22 12:57:05,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:05" (1/1) ... [2020-11-22 12:57:05,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:05" (1/1) ... [2020-11-22 12:57:05,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:05" (1/1) ... [2020-11-22 12:57:05,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:05" (1/1) ... [2020-11-22 12:57:05,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:05" (1/1) ... [2020-11-22 12:57:05,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:05,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:05,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:05,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:05,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/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 [2020-11-22 12:57:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:57:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:57:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:05,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:05,431 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-22 12:57:06,253 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-11-22 12:57:06,253 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-11-22 12:57:06,668 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:06,669 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:57:06,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:06 BoogieIcfgContainer [2020-11-22 12:57:06,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:06,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:06,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:06,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:06,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:04" (1/3) ... [2020-11-22 12:57:06,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b21126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:06, skipping insertion in model container [2020-11-22 12:57:06,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:05" (2/3) ... [2020-11-22 12:57:06,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b21126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:06, skipping insertion in model container [2020-11-22 12:57:06,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:06" (3/3) ... [2020-11-22 12:57:06,688 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-11-22 12:57:06,699 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:06,704 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:57:06,716 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:57:06,746 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:06,746 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:57:06,746 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:06,746 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:06,746 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:06,747 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:06,747 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:06,747 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:06,763 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-11-22 12:57:06,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-22 12:57:06,768 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:06,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:06,769 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:06,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:06,774 INFO L82 PathProgramCache]: Analyzing trace with hash 2146354376, now seen corresponding path program 1 times [2020-11-22 12:57:06,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:06,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817586581] [2020-11-22 12:57:06,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:06,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817586581] [2020-11-22 12:57:06,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:06,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:06,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053921223] [2020-11-22 12:57:06,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:06,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:07,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:07,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:07,015 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 3 states. [2020-11-22 12:57:07,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:07,259 INFO L93 Difference]: Finished difference Result 247 states and 429 transitions. [2020-11-22 12:57:07,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:07,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-22 12:57:07,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:07,279 INFO L225 Difference]: With dead ends: 247 [2020-11-22 12:57:07,279 INFO L226 Difference]: Without dead ends: 129 [2020-11-22 12:57:07,294 INFO L677 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 [2020-11-22 12:57:07,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-22 12:57:07,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-11-22 12:57:07,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-11-22 12:57:07,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 194 transitions. [2020-11-22 12:57:07,370 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 194 transitions. Word has length 19 [2020-11-22 12:57:07,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:07,371 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 194 transitions. [2020-11-22 12:57:07,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:07,371 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 194 transitions. [2020-11-22 12:57:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 12:57:07,372 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:07,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:07,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:57:07,373 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:07,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:07,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1515612529, now seen corresponding path program 1 times [2020-11-22 12:57:07,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:07,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713331288] [2020-11-22 12:57:07,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:07,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713331288] [2020-11-22 12:57:07,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:07,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:07,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011897133] [2020-11-22 12:57:07,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:07,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:07,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:07,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:07,485 INFO L87 Difference]: Start difference. First operand 129 states and 194 transitions. Second operand 3 states. [2020-11-22 12:57:07,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:07,648 INFO L93 Difference]: Finished difference Result 265 states and 397 transitions. [2020-11-22 12:57:07,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:07,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-22 12:57:07,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:07,650 INFO L225 Difference]: With dead ends: 265 [2020-11-22 12:57:07,650 INFO L226 Difference]: Without dead ends: 138 [2020-11-22 12:57:07,651 INFO L677 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 [2020-11-22 12:57:07,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-11-22 12:57:07,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 130. [2020-11-22 12:57:07,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-22 12:57:07,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 195 transitions. [2020-11-22 12:57:07,662 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 195 transitions. Word has length 21 [2020-11-22 12:57:07,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:07,663 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 195 transitions. [2020-11-22 12:57:07,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:07,663 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 195 transitions. [2020-11-22 12:57:07,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 12:57:07,664 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:07,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:07,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:57:07,665 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:07,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:07,665 INFO L82 PathProgramCache]: Analyzing trace with hash 103097799, now seen corresponding path program 1 times [2020-11-22 12:57:07,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:07,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864438541] [2020-11-22 12:57:07,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:07,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864438541] [2020-11-22 12:57:07,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:07,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:07,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831261527] [2020-11-22 12:57:07,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:07,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:07,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:07,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:07,729 INFO L87 Difference]: Start difference. First operand 130 states and 195 transitions. Second operand 3 states. [2020-11-22 12:57:07,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:07,915 INFO L93 Difference]: Finished difference Result 276 states and 415 transitions. [2020-11-22 12:57:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:07,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-22 12:57:07,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:07,917 INFO L225 Difference]: With dead ends: 276 [2020-11-22 12:57:07,917 INFO L226 Difference]: Without dead ends: 148 [2020-11-22 12:57:07,918 INFO L677 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 [2020-11-22 12:57:07,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-11-22 12:57:07,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-11-22 12:57:07,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-22 12:57:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 219 transitions. [2020-11-22 12:57:07,937 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 219 transitions. Word has length 21 [2020-11-22 12:57:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:07,938 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 219 transitions. [2020-11-22 12:57:07,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 219 transitions. [2020-11-22 12:57:07,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 12:57:07,940 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:07,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:07,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:57:07,941 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:07,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:07,942 INFO L82 PathProgramCache]: Analyzing trace with hash -889708936, now seen corresponding path program 1 times [2020-11-22 12:57:07,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:07,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535804331] [2020-11-22 12:57:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:08,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535804331] [2020-11-22 12:57:08,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:08,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:08,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398678677] [2020-11-22 12:57:08,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:08,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:08,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:08,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:08,027 INFO L87 Difference]: Start difference. First operand 146 states and 219 transitions. Second operand 3 states. [2020-11-22 12:57:08,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:08,192 INFO L93 Difference]: Finished difference Result 296 states and 448 transitions. [2020-11-22 12:57:08,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:08,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-22 12:57:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:08,193 INFO L225 Difference]: With dead ends: 296 [2020-11-22 12:57:08,194 INFO L226 Difference]: Without dead ends: 152 [2020-11-22 12:57:08,195 INFO L677 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 [2020-11-22 12:57:08,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-11-22 12:57:08,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-11-22 12:57:08,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-22 12:57:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 230 transitions. [2020-11-22 12:57:08,204 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 230 transitions. Word has length 21 [2020-11-22 12:57:08,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:08,205 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 230 transitions. [2020-11-22 12:57:08,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:08,205 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 230 transitions. [2020-11-22 12:57:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 12:57:08,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:08,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:08,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:57:08,206 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:08,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:08,207 INFO L82 PathProgramCache]: Analyzing trace with hash -899497850, now seen corresponding path program 1 times [2020-11-22 12:57:08,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:08,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988180891] [2020-11-22 12:57:08,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:08,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988180891] [2020-11-22 12:57:08,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:08,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:08,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847543648] [2020-11-22 12:57:08,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:08,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:08,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:08,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:08,276 INFO L87 Difference]: Start difference. First operand 152 states and 230 transitions. Second operand 3 states. [2020-11-22 12:57:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:08,488 INFO L93 Difference]: Finished difference Result 310 states and 467 transitions. [2020-11-22 12:57:08,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:08,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-22 12:57:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:08,491 INFO L225 Difference]: With dead ends: 310 [2020-11-22 12:57:08,491 INFO L226 Difference]: Without dead ends: 160 [2020-11-22 12:57:08,492 INFO L677 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 [2020-11-22 12:57:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-22 12:57:08,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2020-11-22 12:57:08,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-22 12:57:08,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 228 transitions. [2020-11-22 12:57:08,508 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 228 transitions. Word has length 22 [2020-11-22 12:57:08,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:08,509 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 228 transitions. [2020-11-22 12:57:08,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:08,509 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 228 transitions. [2020-11-22 12:57:08,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 12:57:08,510 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:08,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:08,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:57:08,512 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:08,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:08,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1321732580, now seen corresponding path program 1 times [2020-11-22 12:57:08,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:08,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523516491] [2020-11-22 12:57:08,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:08,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523516491] [2020-11-22 12:57:08,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:08,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:08,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991130588] [2020-11-22 12:57:08,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:08,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:08,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:08,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:08,583 INFO L87 Difference]: Start difference. First operand 152 states and 228 transitions. Second operand 3 states. [2020-11-22 12:57:08,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:08,782 INFO L93 Difference]: Finished difference Result 304 states and 456 transitions. [2020-11-22 12:57:08,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:08,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-22 12:57:08,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:08,784 INFO L225 Difference]: With dead ends: 304 [2020-11-22 12:57:08,785 INFO L226 Difference]: Without dead ends: 154 [2020-11-22 12:57:08,785 INFO L677 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 [2020-11-22 12:57:08,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-22 12:57:08,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2020-11-22 12:57:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-22 12:57:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 227 transitions. [2020-11-22 12:57:08,805 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 227 transitions. Word has length 22 [2020-11-22 12:57:08,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:08,805 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 227 transitions. [2020-11-22 12:57:08,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:08,806 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 227 transitions. [2020-11-22 12:57:08,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-22 12:57:08,807 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:08,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:08,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:57:08,807 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:08,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:08,808 INFO L82 PathProgramCache]: Analyzing trace with hash -281894378, now seen corresponding path program 1 times [2020-11-22 12:57:08,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:08,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095478148] [2020-11-22 12:57:08,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:08,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:08,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095478148] [2020-11-22 12:57:08,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:08,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:08,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006855343] [2020-11-22 12:57:08,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:08,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:08,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:08,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:08,873 INFO L87 Difference]: Start difference. First operand 152 states and 227 transitions. Second operand 3 states. [2020-11-22 12:57:09,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:09,043 INFO L93 Difference]: Finished difference Result 310 states and 461 transitions. [2020-11-22 12:57:09,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:09,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-22 12:57:09,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:09,045 INFO L225 Difference]: With dead ends: 310 [2020-11-22 12:57:09,045 INFO L226 Difference]: Without dead ends: 160 [2020-11-22 12:57:09,046 INFO L677 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 [2020-11-22 12:57:09,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-22 12:57:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2020-11-22 12:57:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-22 12:57:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 225 transitions. [2020-11-22 12:57:09,055 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 225 transitions. Word has length 23 [2020-11-22 12:57:09,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:09,056 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 225 transitions. [2020-11-22 12:57:09,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:09,056 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 225 transitions. [2020-11-22 12:57:09,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-22 12:57:09,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:09,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:09,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:57:09,058 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:09,058 INFO L82 PathProgramCache]: Analyzing trace with hash -139442037, now seen corresponding path program 1 times [2020-11-22 12:57:09,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:09,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023266542] [2020-11-22 12:57:09,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:09,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023266542] [2020-11-22 12:57:09,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:09,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:09,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506747308] [2020-11-22 12:57:09,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:09,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:09,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:09,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:09,095 INFO L87 Difference]: Start difference. First operand 152 states and 225 transitions. Second operand 3 states. [2020-11-22 12:57:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:09,255 INFO L93 Difference]: Finished difference Result 310 states and 457 transitions. [2020-11-22 12:57:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:09,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-22 12:57:09,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:09,257 INFO L225 Difference]: With dead ends: 310 [2020-11-22 12:57:09,258 INFO L226 Difference]: Without dead ends: 160 [2020-11-22 12:57:09,258 INFO L677 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 [2020-11-22 12:57:09,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-22 12:57:09,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2020-11-22 12:57:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-22 12:57:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 223 transitions. [2020-11-22 12:57:09,266 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 223 transitions. Word has length 24 [2020-11-22 12:57:09,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:09,267 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 223 transitions. [2020-11-22 12:57:09,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:09,267 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 223 transitions. [2020-11-22 12:57:09,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-22 12:57:09,268 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:09,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:09,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:57:09,269 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:09,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:09,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1127250806, now seen corresponding path program 1 times [2020-11-22 12:57:09,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:09,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465147719] [2020-11-22 12:57:09,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:09,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465147719] [2020-11-22 12:57:09,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:09,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:09,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060210408] [2020-11-22 12:57:09,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:09,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:09,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:09,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:09,334 INFO L87 Difference]: Start difference. First operand 152 states and 223 transitions. Second operand 4 states. [2020-11-22 12:57:09,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:09,784 INFO L93 Difference]: Finished difference Result 441 states and 647 transitions. [2020-11-22 12:57:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:57:09,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-22 12:57:09,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:09,786 INFO L225 Difference]: With dead ends: 441 [2020-11-22 12:57:09,786 INFO L226 Difference]: Without dead ends: 291 [2020-11-22 12:57:09,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:09,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-11-22 12:57:09,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 259. [2020-11-22 12:57:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-11-22 12:57:09,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 381 transitions. [2020-11-22 12:57:09,804 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 381 transitions. Word has length 24 [2020-11-22 12:57:09,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:09,804 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 381 transitions. [2020-11-22 12:57:09,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:09,805 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 381 transitions. [2020-11-22 12:57:09,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-22 12:57:09,806 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:09,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:09,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 12:57:09,806 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:09,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:09,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1174219302, now seen corresponding path program 1 times [2020-11-22 12:57:09,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:09,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320009021] [2020-11-22 12:57:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:09,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320009021] [2020-11-22 12:57:09,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:09,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:09,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889314350] [2020-11-22 12:57:09,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:09,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:09,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:09,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:09,851 INFO L87 Difference]: Start difference. First operand 259 states and 381 transitions. Second operand 3 states. [2020-11-22 12:57:10,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:10,090 INFO L93 Difference]: Finished difference Result 591 states and 881 transitions. [2020-11-22 12:57:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:10,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-11-22 12:57:10,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:10,092 INFO L225 Difference]: With dead ends: 591 [2020-11-22 12:57:10,092 INFO L226 Difference]: Without dead ends: 334 [2020-11-22 12:57:10,093 INFO L677 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 [2020-11-22 12:57:10,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-11-22 12:57:10,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 314. [2020-11-22 12:57:10,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-11-22 12:57:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 466 transitions. [2020-11-22 12:57:10,114 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 466 transitions. Word has length 28 [2020-11-22 12:57:10,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:10,115 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 466 transitions. [2020-11-22 12:57:10,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:10,115 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 466 transitions. [2020-11-22 12:57:10,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-22 12:57:10,119 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:10,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:10,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 12:57:10,120 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:10,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:10,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1065639025, now seen corresponding path program 1 times [2020-11-22 12:57:10,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:10,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267556893] [2020-11-22 12:57:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:10,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267556893] [2020-11-22 12:57:10,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:10,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:10,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401876469] [2020-11-22 12:57:10,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:10,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:10,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:10,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:10,158 INFO L87 Difference]: Start difference. First operand 314 states and 466 transitions. Second operand 3 states. [2020-11-22 12:57:10,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:10,405 INFO L93 Difference]: Finished difference Result 648 states and 967 transitions. [2020-11-22 12:57:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:10,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-11-22 12:57:10,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:10,409 INFO L225 Difference]: With dead ends: 648 [2020-11-22 12:57:10,409 INFO L226 Difference]: Without dead ends: 336 [2020-11-22 12:57:10,410 INFO L677 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 [2020-11-22 12:57:10,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-11-22 12:57:10,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 325. [2020-11-22 12:57:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-11-22 12:57:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 485 transitions. [2020-11-22 12:57:10,428 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 485 transitions. Word has length 29 [2020-11-22 12:57:10,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:10,428 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 485 transitions. [2020-11-22 12:57:10,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:10,429 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 485 transitions. [2020-11-22 12:57:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-22 12:57:10,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:10,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:10,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-22 12:57:10,432 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:10,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:10,433 INFO L82 PathProgramCache]: Analyzing trace with hash 411074125, now seen corresponding path program 1 times [2020-11-22 12:57:10,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:10,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817739891] [2020-11-22 12:57:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:10,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817739891] [2020-11-22 12:57:10,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:10,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:10,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380391809] [2020-11-22 12:57:10,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:10,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:10,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:10,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:10,483 INFO L87 Difference]: Start difference. First operand 325 states and 485 transitions. Second operand 3 states. [2020-11-22 12:57:10,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:10,745 INFO L93 Difference]: Finished difference Result 709 states and 1064 transitions. [2020-11-22 12:57:10,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:10,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-11-22 12:57:10,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:10,749 INFO L225 Difference]: With dead ends: 709 [2020-11-22 12:57:10,749 INFO L226 Difference]: Without dead ends: 386 [2020-11-22 12:57:10,750 INFO L677 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 [2020-11-22 12:57:10,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-11-22 12:57:10,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 378. [2020-11-22 12:57:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-11-22 12:57:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 570 transitions. [2020-11-22 12:57:10,768 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 570 transitions. Word has length 35 [2020-11-22 12:57:10,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:10,769 INFO L481 AbstractCegarLoop]: Abstraction has 378 states and 570 transitions. [2020-11-22 12:57:10,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:10,769 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 570 transitions. [2020-11-22 12:57:10,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-22 12:57:10,770 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:10,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:10,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-22 12:57:10,771 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:10,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:10,771 INFO L82 PathProgramCache]: Analyzing trace with hash -148612451, now seen corresponding path program 1 times [2020-11-22 12:57:10,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:10,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613643183] [2020-11-22 12:57:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:10,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613643183] [2020-11-22 12:57:10,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:10,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:10,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095553346] [2020-11-22 12:57:10,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:10,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:10,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:10,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:10,819 INFO L87 Difference]: Start difference. First operand 378 states and 570 transitions. Second operand 3 states. [2020-11-22 12:57:11,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:11,050 INFO L93 Difference]: Finished difference Result 760 states and 1145 transitions. [2020-11-22 12:57:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:11,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-11-22 12:57:11,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:11,055 INFO L225 Difference]: With dead ends: 760 [2020-11-22 12:57:11,055 INFO L226 Difference]: Without dead ends: 384 [2020-11-22 12:57:11,056 INFO L677 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 [2020-11-22 12:57:11,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-11-22 12:57:11,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 379. [2020-11-22 12:57:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-11-22 12:57:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 570 transitions. [2020-11-22 12:57:11,076 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 570 transitions. Word has length 36 [2020-11-22 12:57:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:11,076 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 570 transitions. [2020-11-22 12:57:11,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:11,077 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 570 transitions. [2020-11-22 12:57:11,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-22 12:57:11,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:11,078 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 12:57:11,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-22 12:57:11,078 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:11,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:11,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1262608608, now seen corresponding path program 1 times [2020-11-22 12:57:11,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:11,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833893134] [2020-11-22 12:57:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:11,130 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:11,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833893134] [2020-11-22 12:57:11,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:11,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:11,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075109730] [2020-11-22 12:57:11,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:11,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:11,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:11,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:11,133 INFO L87 Difference]: Start difference. First operand 379 states and 570 transitions. Second operand 3 states. [2020-11-22 12:57:11,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:11,344 INFO L93 Difference]: Finished difference Result 752 states and 1132 transitions. [2020-11-22 12:57:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:11,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-11-22 12:57:11,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:11,347 INFO L225 Difference]: With dead ends: 752 [2020-11-22 12:57:11,347 INFO L226 Difference]: Without dead ends: 375 [2020-11-22 12:57:11,348 INFO L677 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 [2020-11-22 12:57:11,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-11-22 12:57:11,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 365. [2020-11-22 12:57:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-11-22 12:57:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 544 transitions. [2020-11-22 12:57:11,368 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 544 transitions. Word has length 54 [2020-11-22 12:57:11,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:11,368 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 544 transitions. [2020-11-22 12:57:11,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:11,368 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 544 transitions. [2020-11-22 12:57:11,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-22 12:57:11,370 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:11,370 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 12:57:11,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-22 12:57:11,371 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:11,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:11,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1561790016, now seen corresponding path program 1 times [2020-11-22 12:57:11,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:11,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419945080] [2020-11-22 12:57:11,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-22 12:57:11,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419945080] [2020-11-22 12:57:11,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:11,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:11,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447786174] [2020-11-22 12:57:11,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:11,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:11,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:11,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:11,427 INFO L87 Difference]: Start difference. First operand 365 states and 544 transitions. Second operand 3 states. [2020-11-22 12:57:11,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:11,631 INFO L93 Difference]: Finished difference Result 764 states and 1136 transitions. [2020-11-22 12:57:11,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:11,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-11-22 12:57:11,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:11,634 INFO L225 Difference]: With dead ends: 764 [2020-11-22 12:57:11,634 INFO L226 Difference]: Without dead ends: 401 [2020-11-22 12:57:11,638 INFO L677 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 [2020-11-22 12:57:11,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-11-22 12:57:11,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 393. [2020-11-22 12:57:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-11-22 12:57:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 580 transitions. [2020-11-22 12:57:11,666 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 580 transitions. Word has length 55 [2020-11-22 12:57:11,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:11,666 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 580 transitions. [2020-11-22 12:57:11,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 580 transitions. [2020-11-22 12:57:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-22 12:57:11,668 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:11,668 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 12:57:11,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-22 12:57:11,668 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:11,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:11,669 INFO L82 PathProgramCache]: Analyzing trace with hash 2004988885, now seen corresponding path program 1 times [2020-11-22 12:57:11,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:11,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446508341] [2020-11-22 12:57:11,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-22 12:57:11,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446508341] [2020-11-22 12:57:11,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:11,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:11,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120474546] [2020-11-22 12:57:11,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:11,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:11,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:11,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:11,726 INFO L87 Difference]: Start difference. First operand 393 states and 580 transitions. Second operand 3 states. [2020-11-22 12:57:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:11,925 INFO L93 Difference]: Finished difference Result 788 states and 1163 transitions. [2020-11-22 12:57:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:11,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-11-22 12:57:11,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:11,928 INFO L225 Difference]: With dead ends: 788 [2020-11-22 12:57:11,928 INFO L226 Difference]: Without dead ends: 397 [2020-11-22 12:57:11,929 INFO L677 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 [2020-11-22 12:57:11,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-11-22 12:57:11,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 393. [2020-11-22 12:57:11,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-11-22 12:57:11,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 576 transitions. [2020-11-22 12:57:11,951 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 576 transitions. Word has length 56 [2020-11-22 12:57:11,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:11,951 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 576 transitions. [2020-11-22 12:57:11,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 576 transitions. [2020-11-22 12:57:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-22 12:57:11,953 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:11,953 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 12:57:11,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-22 12:57:11,953 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:11,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:11,954 INFO L82 PathProgramCache]: Analyzing trace with hash 879081452, now seen corresponding path program 1 times [2020-11-22 12:57:11,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:11,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081436954] [2020-11-22 12:57:11,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:12,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081436954] [2020-11-22 12:57:12,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:12,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:12,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160139542] [2020-11-22 12:57:12,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:12,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:12,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:12,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:12,008 INFO L87 Difference]: Start difference. First operand 393 states and 576 transitions. Second operand 3 states. [2020-11-22 12:57:12,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:12,225 INFO L93 Difference]: Finished difference Result 820 states and 1200 transitions. [2020-11-22 12:57:12,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:12,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-11-22 12:57:12,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:12,228 INFO L225 Difference]: With dead ends: 820 [2020-11-22 12:57:12,228 INFO L226 Difference]: Without dead ends: 429 [2020-11-22 12:57:12,230 INFO L677 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 [2020-11-22 12:57:12,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-22 12:57:12,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-11-22 12:57:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-22 12:57:12,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 623 transitions. [2020-11-22 12:57:12,252 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 623 transitions. Word has length 56 [2020-11-22 12:57:12,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:12,253 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 623 transitions. [2020-11-22 12:57:12,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:12,253 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 623 transitions. [2020-11-22 12:57:12,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-22 12:57:12,254 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:12,254 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 12:57:12,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-22 12:57:12,255 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:12,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:12,255 INFO L82 PathProgramCache]: Analyzing trace with hash 142073737, now seen corresponding path program 1 times [2020-11-22 12:57:12,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:12,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857293606] [2020-11-22 12:57:12,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:12,284 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:12,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857293606] [2020-11-22 12:57:12,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:12,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:12,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113061986] [2020-11-22 12:57:12,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:12,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:12,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:12,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:12,293 INFO L87 Difference]: Start difference. First operand 429 states and 623 transitions. Second operand 3 states. [2020-11-22 12:57:12,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:12,535 INFO L93 Difference]: Finished difference Result 901 states and 1307 transitions. [2020-11-22 12:57:12,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:12,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-11-22 12:57:12,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:12,538 INFO L225 Difference]: With dead ends: 901 [2020-11-22 12:57:12,538 INFO L226 Difference]: Without dead ends: 474 [2020-11-22 12:57:12,539 INFO L677 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 [2020-11-22 12:57:12,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-11-22 12:57:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 470. [2020-11-22 12:57:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-11-22 12:57:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 679 transitions. [2020-11-22 12:57:12,562 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 679 transitions. Word has length 68 [2020-11-22 12:57:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:12,562 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 679 transitions. [2020-11-22 12:57:12,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 679 transitions. [2020-11-22 12:57:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-22 12:57:12,563 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:12,564 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 12:57:12,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-22 12:57:12,564 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:12,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:12,565 INFO L82 PathProgramCache]: Analyzing trace with hash -406283111, now seen corresponding path program 1 times [2020-11-22 12:57:12,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:12,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868451150] [2020-11-22 12:57:12,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:12,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868451150] [2020-11-22 12:57:12,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:12,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:12,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50039114] [2020-11-22 12:57:12,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:12,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:12,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:12,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:12,596 INFO L87 Difference]: Start difference. First operand 470 states and 679 transitions. Second operand 3 states. [2020-11-22 12:57:12,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:12,847 INFO L93 Difference]: Finished difference Result 940 states and 1358 transitions. [2020-11-22 12:57:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:12,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-11-22 12:57:12,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:12,853 INFO L225 Difference]: With dead ends: 940 [2020-11-22 12:57:12,853 INFO L226 Difference]: Without dead ends: 472 [2020-11-22 12:57:12,854 INFO L677 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 [2020-11-22 12:57:12,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-11-22 12:57:12,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 470. [2020-11-22 12:57:12,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-11-22 12:57:12,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 676 transitions. [2020-11-22 12:57:12,877 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 676 transitions. Word has length 69 [2020-11-22 12:57:12,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:12,877 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 676 transitions. [2020-11-22 12:57:12,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:12,877 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 676 transitions. [2020-11-22 12:57:12,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-11-22 12:57:12,884 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:12,884 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-22 12:57:12,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-22 12:57:12,885 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:12,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:12,885 INFO L82 PathProgramCache]: Analyzing trace with hash 866625324, now seen corresponding path program 1 times [2020-11-22 12:57:12,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:12,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010769777] [2020-11-22 12:57:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-22 12:57:12,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010769777] [2020-11-22 12:57:12,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:12,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:12,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769569340] [2020-11-22 12:57:12,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:12,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:12,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:12,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:12,918 INFO L87 Difference]: Start difference. First operand 470 states and 676 transitions. Second operand 3 states. [2020-11-22 12:57:13,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:13,103 INFO L93 Difference]: Finished difference Result 968 states and 1390 transitions. [2020-11-22 12:57:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:13,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-11-22 12:57:13,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:13,106 INFO L225 Difference]: With dead ends: 968 [2020-11-22 12:57:13,106 INFO L226 Difference]: Without dead ends: 500 [2020-11-22 12:57:13,108 INFO L677 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 [2020-11-22 12:57:13,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-11-22 12:57:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 496. [2020-11-22 12:57:13,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-11-22 12:57:13,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 705 transitions. [2020-11-22 12:57:13,133 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 705 transitions. Word has length 73 [2020-11-22 12:57:13,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:13,134 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 705 transitions. [2020-11-22 12:57:13,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:13,134 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 705 transitions. [2020-11-22 12:57:13,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-11-22 12:57:13,135 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:13,135 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:13,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-22 12:57:13,136 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:13,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:13,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1555670815, now seen corresponding path program 1 times [2020-11-22 12:57:13,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:13,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201128512] [2020-11-22 12:57:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-22 12:57:13,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201128512] [2020-11-22 12:57:13,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:13,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:13,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054614884] [2020-11-22 12:57:13,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:13,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:13,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:13,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:13,178 INFO L87 Difference]: Start difference. First operand 496 states and 705 transitions. Second operand 3 states. [2020-11-22 12:57:13,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:13,366 INFO L93 Difference]: Finished difference Result 992 states and 1410 transitions. [2020-11-22 12:57:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:13,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-11-22 12:57:13,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:13,369 INFO L225 Difference]: With dead ends: 992 [2020-11-22 12:57:13,369 INFO L226 Difference]: Without dead ends: 498 [2020-11-22 12:57:13,370 INFO L677 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 [2020-11-22 12:57:13,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-11-22 12:57:13,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 496. [2020-11-22 12:57:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-11-22 12:57:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 698 transitions. [2020-11-22 12:57:13,395 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 698 transitions. Word has length 74 [2020-11-22 12:57:13,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:13,395 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 698 transitions. [2020-11-22 12:57:13,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:13,395 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 698 transitions. [2020-11-22 12:57:13,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-22 12:57:13,397 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:13,397 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:13,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-22 12:57:13,398 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:13,398 INFO L82 PathProgramCache]: Analyzing trace with hash -104816172, now seen corresponding path program 1 times [2020-11-22 12:57:13,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:13,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268806029] [2020-11-22 12:57:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-22 12:57:13,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268806029] [2020-11-22 12:57:13,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:13,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:13,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803539390] [2020-11-22 12:57:13,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:13,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:13,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:13,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:13,435 INFO L87 Difference]: Start difference. First operand 496 states and 698 transitions. Second operand 3 states. [2020-11-22 12:57:13,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:13,654 INFO L93 Difference]: Finished difference Result 1028 states and 1442 transitions. [2020-11-22 12:57:13,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:13,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-11-22 12:57:13,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:13,658 INFO L225 Difference]: With dead ends: 1028 [2020-11-22 12:57:13,658 INFO L226 Difference]: Without dead ends: 534 [2020-11-22 12:57:13,659 INFO L677 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 [2020-11-22 12:57:13,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-11-22 12:57:13,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 530. [2020-11-22 12:57:13,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-11-22 12:57:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 737 transitions. [2020-11-22 12:57:13,692 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 737 transitions. Word has length 82 [2020-11-22 12:57:13,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:13,692 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 737 transitions. [2020-11-22 12:57:13,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:13,692 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 737 transitions. [2020-11-22 12:57:13,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-22 12:57:13,694 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:13,694 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:13,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-22 12:57:13,694 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:13,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:13,695 INFO L82 PathProgramCache]: Analyzing trace with hash 2126670143, now seen corresponding path program 1 times [2020-11-22 12:57:13,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:13,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131898666] [2020-11-22 12:57:13,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:13,734 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-22 12:57:13,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131898666] [2020-11-22 12:57:13,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:13,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:13,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570550676] [2020-11-22 12:57:13,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:13,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:13,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:13,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:13,737 INFO L87 Difference]: Start difference. First operand 530 states and 737 transitions. Second operand 3 states. [2020-11-22 12:57:13,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:13,945 INFO L93 Difference]: Finished difference Result 1060 states and 1474 transitions. [2020-11-22 12:57:13,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:13,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-11-22 12:57:13,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:13,948 INFO L225 Difference]: With dead ends: 1060 [2020-11-22 12:57:13,949 INFO L226 Difference]: Without dead ends: 532 [2020-11-22 12:57:13,950 INFO L677 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 [2020-11-22 12:57:13,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-11-22 12:57:13,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 530. [2020-11-22 12:57:13,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-11-22 12:57:13,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 732 transitions. [2020-11-22 12:57:13,975 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 732 transitions. Word has length 83 [2020-11-22 12:57:13,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:13,976 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 732 transitions. [2020-11-22 12:57:13,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:13,976 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 732 transitions. [2020-11-22 12:57:13,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-22 12:57:13,977 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:13,978 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:13,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-22 12:57:13,978 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:13,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:13,978 INFO L82 PathProgramCache]: Analyzing trace with hash -97967580, now seen corresponding path program 1 times [2020-11-22 12:57:13,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:13,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213909333] [2020-11-22 12:57:13,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:57:14,046 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:57:14,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:14,130 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:57:14,130 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:57:14,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-22 12:57:14,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:14 BoogieIcfgContainer [2020-11-22 12:57:14,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:14,258 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:14,258 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:14,258 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:14,260 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:06" (3/4) ... [2020-11-22 12:57:14,262 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:57:14,369 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dfa64a7b-89f4-4634-81b8-a0a9cc81a912/bin/utaipan/witness.graphml [2020-11-22 12:57:14,370 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:14,371 INFO L168 Benchmark]: Toolchain (without parser) took 9724.66 ms. Allocated memory was 75.5 MB in the beginning and 201.3 MB in the end (delta: 125.8 MB). Free memory was 40.1 MB in the beginning and 173.9 MB in the end (delta: -133.9 MB). Peak memory consumption was 108.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:14,372 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory was 56.8 MB in the beginning and 56.7 MB in the end (delta: 63.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:14,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.27 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 39.9 MB in the beginning and 65.3 MB in the end (delta: -25.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:14,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.13 ms. Allocated memory is still 92.3 MB. Free memory was 65.3 MB in the beginning and 62.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:14,373 INFO L168 Benchmark]: Boogie Preprocessor took 56.94 ms. Allocated memory is still 92.3 MB. Free memory was 62.3 MB in the beginning and 60.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:14,373 INFO L168 Benchmark]: RCFGBuilder took 1476.74 ms. Allocated memory is still 92.3 MB. Free memory was 59.9 MB in the beginning and 33.0 MB in the end (delta: 26.9 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:14,374 INFO L168 Benchmark]: TraceAbstraction took 7577.34 ms. Allocated memory was 92.3 MB in the beginning and 201.3 MB in the end (delta: 109.1 MB). Free memory was 67.7 MB in the beginning and 69.8 MB in the end (delta: -2.1 MB). Peak memory consumption was 105.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:14,374 INFO L168 Benchmark]: Witness Printer took 111.90 ms. Allocated memory is still 201.3 MB. Free memory was 68.7 MB in the beginning and 173.9 MB in the end (delta: -105.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:14,376 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory was 56.8 MB in the beginning and 56.7 MB in the end (delta: 63.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 412.27 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 39.9 MB in the beginning and 65.3 MB in the end (delta: -25.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.13 ms. Allocated memory is still 92.3 MB. Free memory was 65.3 MB in the beginning and 62.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.94 ms. Allocated memory is still 92.3 MB. Free memory was 62.3 MB in the beginning and 60.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1476.74 ms. Allocated memory is still 92.3 MB. Free memory was 59.9 MB in the beginning and 33.0 MB in the end (delta: 26.9 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7577.34 ms. Allocated memory was 92.3 MB in the beginning and 201.3 MB in the end (delta: 109.1 MB). Free memory was 67.7 MB in the beginning and 69.8 MB in the end (delta: -2.1 MB). Peak memory consumption was 105.5 MB. Max. memory is 16.1 GB. * Witness Printer took 111.90 ms. Allocated memory is still 201.3 MB. Free memory was 68.7 MB in the beginning and 173.9 MB in the end (delta: -105.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L649] int s ; [L650] int tmp ; [L654] s = 8464 [L13] int s__info_callback = __VERIFIER_nondet_int() ; [L14] int s__in_handshake = __VERIFIER_nondet_int() ; [L15] int s__state ; [L16] int s__new_session ; [L17] int s__server ; [L18] int s__version = __VERIFIER_nondet_int() ; [L19] int s__type ; [L20] int s__init_num ; [L21] int s__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = 1; [L24] int s__debug = __VERIFIER_nondet_int() ; [L25] int s__shutdown ; [L26] int s__cert = __VERIFIER_nondet_int() ; [L27] int s__options = __VERIFIER_nondet_int() ; [L28] int s__verify_mode = __VERIFIER_nondet_int() ; [L29] int s__session__peer = __VERIFIER_nondet_int() ; [L30] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L31] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__cert_request ; [L36] int s__s3__tmp__reuse_message ; [L37] int s__s3__tmp__use_rsa_tmp ; [L38] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher__algorithms ; [L40] int s__s3__tmp__next_state___0 ; [L41] int s__s3__tmp__new_cipher__algo_strength ; [L42] int s__session__cipher ; [L43] int buf ; [L44] unsigned long l ; [L45] unsigned long Time ; [L46] unsigned long tmp ; [L47] int cb ; [L48] long num1 = __VERIFIER_nondet_long() ; [L49] int ret ; [L50] int new_state ; [L51] int state ; [L52] int skip ; [L53] int got_new_session ; [L54] int tmp___1 = __VERIFIER_nondet_int() ; [L55] int tmp___2 = __VERIFIER_nondet_int() ; [L56] int tmp___3 = __VERIFIER_nondet_int() ; [L57] int tmp___4 = __VERIFIER_nondet_int() ; [L58] int tmp___5 = __VERIFIER_nondet_int() ; [L59] int tmp___6 = __VERIFIER_nondet_int() ; [L60] int tmp___7 = __VERIFIER_nondet_int() ; [L61] long tmp___8 = __VERIFIER_nondet_long() ; [L62] int tmp___9 = __VERIFIER_nondet_int() ; [L63] int tmp___10 = __VERIFIER_nondet_int() ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] unsigned long __cil_tmp56 ; [L67] unsigned long __cil_tmp57 ; [L68] unsigned long __cil_tmp58 ; [L69] unsigned long __cil_tmp59 ; [L70] int __cil_tmp60 ; [L71] unsigned long __cil_tmp61 ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND FALSE !(s__info_callback != 0) [L85] COND FALSE !(s__ctx__info_callback != 0) [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] skip = 1 [L317] s__state = 8528 [L318] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L322] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L323] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L325] __cil_tmp57 = (unsigned long )s__options [L326] COND TRUE __cil_tmp57 + 2097152UL [L327] s__s3__tmp__use_rsa_tmp = 1 [L332] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L359] ret = __VERIFIER_nondet_int() [L360] COND FALSE !(blastFlag == 6) [L363] COND FALSE !(ret <= 0) [L380] s__state = 8544 [L381] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE state == 8528 [L605] COND TRUE s__state == 8544 [L606] COND TRUE tmp___7 != 1024 [L607] COND TRUE tmp___7 != 512 [L608] COND TRUE __cil_tmp58 != 4294967294 [L609] COND TRUE l != 4294967266 [L3] __assert_fail("0", "s3_srvr_13.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.3s, OverallIterations: 24, TraceHistogramMax: 4, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2461 SDtfs, 3105 SDslu, 525 SDs, 0 SdLazy, 2013 SolverSat, 862 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=530occurred in iteration=22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 23 MinimizatonAttempts, 152 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1083 NumberOfCodeBlocks, 1083 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 972 ConstructedInterpolants, 0 QuantifiedInterpolants, 108490 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 352/352 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...