./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label53.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_60863ed8-d591-484d-a500-94f2bed0de37/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label53.c -s /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/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 2ac1cca436dbb0ff666a046c15c87b345ed083b6 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:28:22,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:28:22,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:28:22,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:28:22,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:28:22,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:28:22,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:28:22,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:28:22,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:28:22,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:28:22,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:28:22,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:28:22,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:28:22,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:28:22,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:28:22,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:28:22,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:28:22,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:28:22,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:28:22,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:28:22,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:28:22,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:28:22,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:28:22,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:28:22,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:28:22,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:28:22,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:28:22,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:28:22,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:28:22,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:28:22,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:28:22,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:28:22,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:28:22,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:28:22,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:28:22,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:28:22,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:28:22,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:28:22,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:28:22,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:28:22,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:28:22,384 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:28:22,430 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:28:22,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:28:22,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:28:22,433 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:28:22,433 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:28:22,433 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:28:22,433 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:28:22,434 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:28:22,434 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:28:22,434 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:28:22,435 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:28:22,436 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:28:22,436 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:28:22,436 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:28:22,436 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:28:22,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:28:22,438 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:28:22,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:28:22,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:28:22,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:28:22,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:28:22,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:28:22,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:28:22,439 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:28:22,439 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:28:22,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:28:22,440 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:28:22,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:28:22,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:28:22,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:28:22,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:28:22,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:28:22,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:28:22,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:28:22,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:28:22,444 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:28:22,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:28:22,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:28:22,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:28:22,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:28:22,445 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_60863ed8-d591-484d-a500-94f2bed0de37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ac1cca436dbb0ff666a046c15c87b345ed083b6 [2020-11-28 07:28:22,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:28:22,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:28:22,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:28:22,747 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:28:22,748 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:28:22,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label53.c [2020-11-28 07:28:22,823 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/bin/utaipan/data/4c04fa927/83629f28447c4729961853b7df0d3295/FLAGdeb81dc1a [2020-11-28 07:28:23,468 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:28:23,468 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/sv-benchmarks/c/eca-rers2012/Problem01_label53.c [2020-11-28 07:28:23,489 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/bin/utaipan/data/4c04fa927/83629f28447c4729961853b7df0d3295/FLAGdeb81dc1a [2020-11-28 07:28:23,747 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/bin/utaipan/data/4c04fa927/83629f28447c4729961853b7df0d3295 [2020-11-28 07:28:23,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:28:23,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:28:23,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:28:23,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:28:23,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:28:23,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:28:23" (1/1) ... [2020-11-28 07:28:23,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a02ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:23, skipping insertion in model container [2020-11-28 07:28:23,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:28:23" (1/1) ... [2020-11-28 07:28:23,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:28:23,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:28:24,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:28:24,248 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:28:24,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:28:24,376 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:28:24,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24 WrapperNode [2020-11-28 07:28:24,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:28:24,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:28:24,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:28:24,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:28:24,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:28:24,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:28:24,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:28:24,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:28:24,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:28:24,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:28:24,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:28:24,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:28:24,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/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 [2020-11-28 07:28:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:28:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:28:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:28:24,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:28:26,838 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:28:26,839 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:28:26,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:26 BoogieIcfgContainer [2020-11-28 07:28:26,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:28:26,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:28:26,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:28:26,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:28:26,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:28:23" (1/3) ... [2020-11-28 07:28:26,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0c2754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:28:26, skipping insertion in model container [2020-11-28 07:28:26,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (2/3) ... [2020-11-28 07:28:26,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0c2754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:28:26, skipping insertion in model container [2020-11-28 07:28:26,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:26" (3/3) ... [2020-11-28 07:28:26,850 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label53.c [2020-11-28 07:28:26,861 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:28:26,866 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:28:26,878 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:28:26,902 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:28:26,903 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:28:26,903 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:28:26,903 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:28:26,903 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:28:26,903 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:28:26,904 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:28:26,904 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:28:26,919 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 07:28:26,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-28 07:28:26,927 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:26,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:26,928 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:26,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1520711021, now seen corresponding path program 1 times [2020-11-28 07:28:26,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:26,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017388351] [2020-11-28 07:28:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:27,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017388351] [2020-11-28 07:28:27,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:27,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:27,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446415888] [2020-11-28 07:28:27,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:27,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:27,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:27,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:27,360 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-28 07:28:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:27,979 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-28 07:28:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:27,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-28 07:28:27,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:27,993 INFO L225 Difference]: With dead ends: 224 [2020-11-28 07:28:27,994 INFO L226 Difference]: Without dead ends: 145 [2020-11-28 07:28:28,000 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 [2020-11-28 07:28:28,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-28 07:28:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-28 07:28:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-28 07:28:28,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2020-11-28 07:28:28,060 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2020-11-28 07:28:28,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:28,061 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2020-11-28 07:28:28,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:28,061 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2020-11-28 07:28:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-28 07:28:28,065 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:28,065 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:28,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:28:28,066 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:28,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:28,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1975135166, now seen corresponding path program 1 times [2020-11-28 07:28:28,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:28,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941413121] [2020-11-28 07:28:28,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:28,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941413121] [2020-11-28 07:28:28,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:28,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:28,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702428062] [2020-11-28 07:28:28,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:28,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:28,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:28,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:28,129 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand 3 states. [2020-11-28 07:28:28,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:28,618 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2020-11-28 07:28:28,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:28,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-28 07:28:28,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:28,622 INFO L225 Difference]: With dead ends: 431 [2020-11-28 07:28:28,622 INFO L226 Difference]: Without dead ends: 287 [2020-11-28 07:28:28,624 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 [2020-11-28 07:28:28,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-28 07:28:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-28 07:28:28,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-28 07:28:28,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 485 transitions. [2020-11-28 07:28:28,655 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 485 transitions. Word has length 77 [2020-11-28 07:28:28,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:28,655 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 485 transitions. [2020-11-28 07:28:28,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:28,656 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 485 transitions. [2020-11-28 07:28:28,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-28 07:28:28,668 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:28,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:28,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:28:28,669 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:28,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:28,670 INFO L82 PathProgramCache]: Analyzing trace with hash 790497945, now seen corresponding path program 1 times [2020-11-28 07:28:28,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:28,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027493142] [2020-11-28 07:28:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:28,794 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:28,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027493142] [2020-11-28 07:28:28,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:28,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:28,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587998575] [2020-11-28 07:28:28,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:28,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:28,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:28,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:28,805 INFO L87 Difference]: Start difference. First operand 287 states and 485 transitions. Second operand 3 states. [2020-11-28 07:28:29,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:29,295 INFO L93 Difference]: Finished difference Result 857 states and 1452 transitions. [2020-11-28 07:28:29,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:29,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-11-28 07:28:29,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:29,300 INFO L225 Difference]: With dead ends: 857 [2020-11-28 07:28:29,300 INFO L226 Difference]: Without dead ends: 571 [2020-11-28 07:28:29,302 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 [2020-11-28 07:28:29,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-11-28 07:28:29,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-11-28 07:28:29,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-28 07:28:29,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 895 transitions. [2020-11-28 07:28:29,339 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 895 transitions. Word has length 92 [2020-11-28 07:28:29,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:29,341 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 895 transitions. [2020-11-28 07:28:29,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:29,341 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 895 transitions. [2020-11-28 07:28:29,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-28 07:28:29,344 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:29,344 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:29,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:28:29,345 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:29,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:29,347 INFO L82 PathProgramCache]: Analyzing trace with hash 2064956635, now seen corresponding path program 1 times [2020-11-28 07:28:29,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:29,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961837096] [2020-11-28 07:28:29,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:29,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961837096] [2020-11-28 07:28:29,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:29,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:28:29,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178277589] [2020-11-28 07:28:29,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:28:29,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:29,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:28:29,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:28:29,487 INFO L87 Difference]: Start difference. First operand 571 states and 895 transitions. Second operand 4 states. [2020-11-28 07:28:30,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:30,210 INFO L93 Difference]: Finished difference Result 1141 states and 1789 transitions. [2020-11-28 07:28:30,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:28:30,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-11-28 07:28:30,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:30,215 INFO L225 Difference]: With dead ends: 1141 [2020-11-28 07:28:30,215 INFO L226 Difference]: Without dead ends: 571 [2020-11-28 07:28:30,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:28:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-11-28 07:28:30,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-11-28 07:28:30,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-28 07:28:30,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 859 transitions. [2020-11-28 07:28:30,242 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 859 transitions. Word has length 105 [2020-11-28 07:28:30,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:30,243 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 859 transitions. [2020-11-28 07:28:30,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:28:30,243 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 859 transitions. [2020-11-28 07:28:30,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-11-28 07:28:30,252 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:30,252 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:30,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:28:30,252 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:30,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:30,253 INFO L82 PathProgramCache]: Analyzing trace with hash -480430555, now seen corresponding path program 1 times [2020-11-28 07:28:30,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:30,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851438875] [2020-11-28 07:28:30,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 07:28:30,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851438875] [2020-11-28 07:28:30,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:30,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:30,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959588340] [2020-11-28 07:28:30,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:30,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:30,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:30,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:30,405 INFO L87 Difference]: Start difference. First operand 571 states and 859 transitions. Second operand 3 states. [2020-11-28 07:28:30,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:30,848 INFO L93 Difference]: Finished difference Result 1283 states and 1913 transitions. [2020-11-28 07:28:30,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:30,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-11-28 07:28:30,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:30,862 INFO L225 Difference]: With dead ends: 1283 [2020-11-28 07:28:30,863 INFO L226 Difference]: Without dead ends: 713 [2020-11-28 07:28:30,864 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 [2020-11-28 07:28:30,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-28 07:28:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 571. [2020-11-28 07:28:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-28 07:28:30,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 847 transitions. [2020-11-28 07:28:30,898 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 847 transitions. Word has length 109 [2020-11-28 07:28:30,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:30,898 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 847 transitions. [2020-11-28 07:28:30,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:30,898 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 847 transitions. [2020-11-28 07:28:30,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-28 07:28:30,900 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:30,901 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:30,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:28:30,901 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:30,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:30,901 INFO L82 PathProgramCache]: Analyzing trace with hash -363770401, now seen corresponding path program 1 times [2020-11-28 07:28:30,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:30,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930818719] [2020-11-28 07:28:30,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:31,019 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 07:28:31,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930818719] [2020-11-28 07:28:31,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:31,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:28:31,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131169913] [2020-11-28 07:28:31,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:28:31,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:31,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:28:31,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:28:31,023 INFO L87 Difference]: Start difference. First operand 571 states and 847 transitions. Second operand 4 states. [2020-11-28 07:28:31,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:31,730 INFO L93 Difference]: Finished difference Result 1709 states and 2490 transitions. [2020-11-28 07:28:31,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:28:31,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-11-28 07:28:31,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:31,739 INFO L225 Difference]: With dead ends: 1709 [2020-11-28 07:28:31,740 INFO L226 Difference]: Without dead ends: 997 [2020-11-28 07:28:31,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:28:31,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-28 07:28:31,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 784. [2020-11-28 07:28:31,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-28 07:28:31,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1021 transitions. [2020-11-28 07:28:31,781 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1021 transitions. Word has length 113 [2020-11-28 07:28:31,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:31,781 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1021 transitions. [2020-11-28 07:28:31,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:28:31,782 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1021 transitions. [2020-11-28 07:28:31,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-11-28 07:28:31,784 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:31,784 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:31,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:28:31,785 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:31,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:31,785 INFO L82 PathProgramCache]: Analyzing trace with hash -338583947, now seen corresponding path program 1 times [2020-11-28 07:28:31,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:31,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17072531] [2020-11-28 07:28:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-28 07:28:31,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17072531] [2020-11-28 07:28:31,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:31,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:28:31,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31037640] [2020-11-28 07:28:31,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:31,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:31,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:31,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:31,854 INFO L87 Difference]: Start difference. First operand 784 states and 1021 transitions. Second operand 3 states. [2020-11-28 07:28:32,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:32,309 INFO L93 Difference]: Finished difference Result 1851 states and 2395 transitions. [2020-11-28 07:28:32,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:32,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-11-28 07:28:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:32,318 INFO L225 Difference]: With dead ends: 1851 [2020-11-28 07:28:32,318 INFO L226 Difference]: Without dead ends: 1068 [2020-11-28 07:28:32,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:32,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-28 07:28:32,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2020-11-28 07:28:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-28 07:28:32,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1191 transitions. [2020-11-28 07:28:32,355 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1191 transitions. Word has length 122 [2020-11-28 07:28:32,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:32,356 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1191 transitions. [2020-11-28 07:28:32,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:32,356 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1191 transitions. [2020-11-28 07:28:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-11-28 07:28:32,359 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:32,360 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:32,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:28:32,360 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:32,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:32,362 INFO L82 PathProgramCache]: Analyzing trace with hash -618941635, now seen corresponding path program 1 times [2020-11-28 07:28:32,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:32,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625886840] [2020-11-28 07:28:32,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-28 07:28:32,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625886840] [2020-11-28 07:28:32,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:32,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:32,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584153627] [2020-11-28 07:28:32,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:32,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:32,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:32,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:32,468 INFO L87 Difference]: Start difference. First operand 926 states and 1191 transitions. Second operand 3 states. [2020-11-28 07:28:32,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:32,956 INFO L93 Difference]: Finished difference Result 1993 states and 2559 transitions. [2020-11-28 07:28:32,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:32,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-11-28 07:28:32,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:32,964 INFO L225 Difference]: With dead ends: 1993 [2020-11-28 07:28:32,965 INFO L226 Difference]: Without dead ends: 1068 [2020-11-28 07:28:32,967 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 [2020-11-28 07:28:32,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-28 07:28:33,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2020-11-28 07:28:33,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-28 07:28:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1355 transitions. [2020-11-28 07:28:33,008 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1355 transitions. Word has length 138 [2020-11-28 07:28:33,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:33,009 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1355 transitions. [2020-11-28 07:28:33,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:33,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1355 transitions. [2020-11-28 07:28:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-28 07:28:33,013 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:33,013 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:33,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:28:33,014 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:33,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:33,015 INFO L82 PathProgramCache]: Analyzing trace with hash -2031266011, now seen corresponding path program 1 times [2020-11-28 07:28:33,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:33,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987053308] [2020-11-28 07:28:33,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-11-28 07:28:33,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987053308] [2020-11-28 07:28:33,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:33,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:28:33,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244655909] [2020-11-28 07:28:33,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:28:33,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:33,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:28:33,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:28:33,169 INFO L87 Difference]: Start difference. First operand 1068 states and 1355 transitions. Second operand 4 states. [2020-11-28 07:28:33,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:33,862 INFO L93 Difference]: Finished difference Result 2206 states and 2791 transitions. [2020-11-28 07:28:33,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:28:33,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-11-28 07:28:33,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:33,870 INFO L225 Difference]: With dead ends: 2206 [2020-11-28 07:28:33,870 INFO L226 Difference]: Without dead ends: 1139 [2020-11-28 07:28:33,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:28:33,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-28 07:28:33,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2020-11-28 07:28:33,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-28 07:28:33,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1424 transitions. [2020-11-28 07:28:33,904 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1424 transitions. Word has length 154 [2020-11-28 07:28:33,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:33,904 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1424 transitions. [2020-11-28 07:28:33,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:28:33,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1424 transitions. [2020-11-28 07:28:33,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-28 07:28:33,908 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:33,908 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:33,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:28:33,908 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:33,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:33,910 INFO L82 PathProgramCache]: Analyzing trace with hash -536184718, now seen corresponding path program 1 times [2020-11-28 07:28:33,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:33,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779676024] [2020-11-28 07:28:33,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:34,078 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-11-28 07:28:34,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779676024] [2020-11-28 07:28:34,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:34,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:28:34,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343251712] [2020-11-28 07:28:34,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:34,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:34,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:34,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:34,084 INFO L87 Difference]: Start difference. First operand 1139 states and 1424 transitions. Second operand 3 states. [2020-11-28 07:28:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:34,528 INFO L93 Difference]: Finished difference Result 2703 states and 3412 transitions. [2020-11-28 07:28:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:34,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-11-28 07:28:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:34,541 INFO L225 Difference]: With dead ends: 2703 [2020-11-28 07:28:34,542 INFO L226 Difference]: Without dead ends: 1565 [2020-11-28 07:28:34,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:34,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-11-28 07:28:34,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1352. [2020-11-28 07:28:34,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-11-28 07:28:34,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1696 transitions. [2020-11-28 07:28:34,587 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1696 transitions. Word has length 171 [2020-11-28 07:28:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:34,588 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1696 transitions. [2020-11-28 07:28:34,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1696 transitions. [2020-11-28 07:28:34,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-11-28 07:28:34,591 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:34,592 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:28:34,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:28:34,592 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:34,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:34,593 INFO L82 PathProgramCache]: Analyzing trace with hash 223930677, now seen corresponding path program 1 times [2020-11-28 07:28:34,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:34,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549914190] [2020-11-28 07:28:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:35,081 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 63 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:35,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549914190] [2020-11-28 07:28:35,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187609047] [2020-11-28 07:28:35,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:28:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:35,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:28:35,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-28 07:28:35,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:35,648 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-28 07:28:35,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:28:35,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-28 07:28:35,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304510884] [2020-11-28 07:28:35,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:35,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:35,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:35,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:28:35,651 INFO L87 Difference]: Start difference. First operand 1352 states and 1696 transitions. Second operand 3 states. [2020-11-28 07:28:36,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:36,135 INFO L93 Difference]: Finished difference Result 2703 states and 3391 transitions. [2020-11-28 07:28:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:36,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2020-11-28 07:28:36,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:36,146 INFO L225 Difference]: With dead ends: 2703 [2020-11-28 07:28:36,146 INFO L226 Difference]: Without dead ends: 1352 [2020-11-28 07:28:36,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:28:36,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-11-28 07:28:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1210. [2020-11-28 07:28:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-28 07:28:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1443 transitions. [2020-11-28 07:28:36,191 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1443 transitions. Word has length 175 [2020-11-28 07:28:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:36,191 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1443 transitions. [2020-11-28 07:28:36,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:36,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1443 transitions. [2020-11-28 07:28:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-11-28 07:28:36,197 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:36,197 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-11-28 07:28:36,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-28 07:28:36,413 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:36,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:36,413 INFO L82 PathProgramCache]: Analyzing trace with hash -995892156, now seen corresponding path program 1 times [2020-11-28 07:28:36,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:36,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270438300] [2020-11-28 07:28:36,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 188 proven. 112 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-11-28 07:28:36,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270438300] [2020-11-28 07:28:36,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27676230] [2020-11-28 07:28:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:28:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:36,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:28:36,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-11-28 07:28:36,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:37,059 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-11-28 07:28:37,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:28:37,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2020-11-28 07:28:37,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716053580] [2020-11-28 07:28:37,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:37,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:37,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:37,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:28:37,061 INFO L87 Difference]: Start difference. First operand 1210 states and 1443 transitions. Second operand 3 states. [2020-11-28 07:28:37,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:37,471 INFO L93 Difference]: Finished difference Result 2630 states and 3115 transitions. [2020-11-28 07:28:37,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:37,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2020-11-28 07:28:37,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:37,472 INFO L225 Difference]: With dead ends: 2630 [2020-11-28 07:28:37,472 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:28:37,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 483 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:28:37,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:28:37,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:28:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:28:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:28:37,476 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 242 [2020-11-28 07:28:37,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:37,476 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:28:37,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:37,476 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:28:37,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:28:37,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-28 07:28:37,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:28:37,959 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-11-28 07:28:38,171 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-11-28 07:28:38,174 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-28 07:28:38,174 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-28 07:28:38,174 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-28 07:28:38,174 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-28 07:28:38,174 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-28 07:28:38,174 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-28 07:28:38,174 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-28 07:28:38,174 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-28 07:28:38,174 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-28 07:28:38,174 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-28 07:28:38,174 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-28 07:28:38,175 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-28 07:28:38,175 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-28 07:28:38,175 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-28 07:28:38,175 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-28 07:28:38,175 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-28 07:28:38,175 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-28 07:28:38,175 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-28 07:28:38,175 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-28 07:28:38,175 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-28 07:28:38,175 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-28 07:28:38,175 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-28 07:28:38,175 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-28 07:28:38,175 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-28 07:28:38,175 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-28 07:28:38,175 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-28 07:28:38,176 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-28 07:28:38,176 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-28 07:28:38,176 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-28 07:28:38,176 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-28 07:28:38,176 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-28 07:28:38,176 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-28 07:28:38,176 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-28 07:28:38,176 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-28 07:28:38,176 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-28 07:28:38,176 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-28 07:28:38,176 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:28:38,176 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-28 07:28:38,176 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-28 07:28:38,176 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-28 07:28:38,185 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (<= ~a8~0 13)) (.cse5 (<= ~a16~0 5)) (.cse3 (<= ~a17~0 0)) (.cse4 (= ~a21~0 1)) (.cse0 (= ~a20~0 1)) (.cse6 (<= 15 ~a8~0)) (.cse1 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse0 .cse2) (and .cse4 .cse3 .cse0) (and .cse5 .cse1 .cse2) (and .cse5 .cse3) (and .cse3 .cse6) (and .cse4 .cse0 .cse1) (and (not (= ~a7~0 1)) .cse6 .cse1))) [2020-11-28 07:28:38,186 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-28 07:28:38,186 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-28 07:28:38,186 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-28 07:28:38,186 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-28 07:28:38,186 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-28 07:28:38,186 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-28 07:28:38,186 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-28 07:28:38,186 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:28:38,187 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-28 07:28:38,187 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-28 07:28:38,187 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-28 07:28:38,187 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-28 07:28:38,187 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-28 07:28:38,187 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-28 07:28:38,187 INFO L274 CegarLoopResult]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:28:38,188 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-28 07:28:38,188 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-28 07:28:38,188 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-28 07:28:38,188 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-28 07:28:38,188 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-28 07:28:38,188 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-28 07:28:38,188 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-28 07:28:38,188 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-28 07:28:38,189 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-28 07:28:38,189 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (<= ~a8~0 13)) (.cse5 (<= ~a16~0 5)) (.cse3 (<= ~a17~0 0)) (.cse4 (= ~a21~0 1)) (.cse0 (= ~a20~0 1)) (.cse6 (<= 15 ~a8~0)) (.cse1 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse0 .cse2) (and .cse4 .cse3 .cse0) (and .cse5 .cse1 .cse2) (and .cse5 .cse3) (and .cse3 .cse6) (and .cse4 .cse0 .cse1) (and (not (= ~a7~0 1)) .cse6 .cse1))) [2020-11-28 07:28:38,189 INFO L274 CegarLoopResult]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:28:38,189 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-28 07:28:38,189 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:28:38,190 INFO L274 CegarLoopResult]: For program point L528(line 528) no Hoare annotation was computed. [2020-11-28 07:28:38,190 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-28 07:28:38,190 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-28 07:28:38,190 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-28 07:28:38,190 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-28 07:28:38,190 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-28 07:28:38,190 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-28 07:28:38,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:28:38 BoogieIcfgContainer [2020-11-28 07:28:38,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:28:38,244 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:28:38,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:28:38,244 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:28:38,245 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:26" (3/4) ... [2020-11-28 07:28:38,248 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:28:38,292 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-28 07:28:38,294 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:28:38,295 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-28 07:28:38,296 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:28:38,491 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_60863ed8-d591-484d-a500-94f2bed0de37/bin/utaipan/witness.graphml [2020-11-28 07:28:38,491 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:28:38,492 INFO L168 Benchmark]: Toolchain (without parser) took 14741.10 ms. Allocated memory was 94.4 MB in the beginning and 304.1 MB in the end (delta: 209.7 MB). Free memory was 62.9 MB in the beginning and 209.6 MB in the end (delta: -146.7 MB). Peak memory consumption was 62.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:38,493 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory is still 50.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:38,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 618.33 ms. Allocated memory is still 94.4 MB. Free memory was 62.9 MB in the beginning and 55.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:38,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.98 ms. Allocated memory is still 94.4 MB. Free memory was 55.3 MB in the beginning and 49.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:38,494 INFO L168 Benchmark]: Boogie Preprocessor took 102.18 ms. Allocated memory is still 94.4 MB. Free memory was 49.9 MB in the beginning and 45.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:38,494 INFO L168 Benchmark]: RCFGBuilder took 2263.02 ms. Allocated memory was 94.4 MB in the beginning and 151.0 MB in the end (delta: 56.6 MB). Free memory was 45.3 MB in the beginning and 115.9 MB in the end (delta: -70.6 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:38,495 INFO L168 Benchmark]: TraceAbstraction took 11400.10 ms. Allocated memory was 151.0 MB in the beginning and 304.1 MB in the end (delta: 153.1 MB). Free memory was 115.9 MB in the beginning and 224.3 MB in the end (delta: -108.4 MB). Peak memory consumption was 176.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:38,495 INFO L168 Benchmark]: Witness Printer took 247.85 ms. Allocated memory is still 304.1 MB. Free memory was 224.3 MB in the beginning and 209.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:38,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory is still 50.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 618.33 ms. Allocated memory is still 94.4 MB. Free memory was 62.9 MB in the beginning and 55.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.98 ms. Allocated memory is still 94.4 MB. Free memory was 55.3 MB in the beginning and 49.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 102.18 ms. Allocated memory is still 94.4 MB. Free memory was 49.9 MB in the beginning and 45.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2263.02 ms. Allocated memory was 94.4 MB in the beginning and 151.0 MB in the end (delta: 56.6 MB). Free memory was 45.3 MB in the beginning and 115.9 MB in the end (delta: -70.6 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11400.10 ms. Allocated memory was 151.0 MB in the beginning and 304.1 MB in the end (delta: 153.1 MB). Free memory was 115.9 MB in the beginning and 224.3 MB in the end (delta: -108.4 MB). Peak memory consumption was 176.8 MB. Max. memory is 16.1 GB. * Witness Printer took 247.85 ms. Allocated memory is still 304.1 MB. Free memory was 224.3 MB in the beginning and 209.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((a20 == 1 && a17 == 1) && a8 <= 13) || ((a17 <= 0 && a20 == 1) && a8 <= 13)) || ((a21 == 1 && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || (a16 <= 5 && a17 <= 0)) || (a17 <= 0 && 15 <= a8)) || ((a21 == 1 && a20 == 1) && a17 == 1)) || ((!(a7 == 1) && 15 <= a8) && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((a20 == 1 && a17 == 1) && a8 <= 13) || ((a17 <= 0 && a20 == 1) && a8 <= 13)) || ((a21 == 1 && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || (a16 <= 5 && a17 <= 0)) || (a17 <= 0 && 15 <= a8)) || ((a21 == 1 && a20 == 1) && a17 == 1)) || ((!(a7 == 1) && 15 <= a8) && a17 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.7s, OverallIterations: 12, TraceHistogramMax: 6, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 509 SDtfs, 867 SDslu, 55 SDs, 0 SdLazy, 2807 SolverSat, 667 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 865 GetRequests, 842 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1352occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 852 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 49 NumberOfFragments, 153 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2232 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 192 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1986 NumberOfCodeBlocks, 1986 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2387 ConstructedInterpolants, 0 QuantifiedInterpolants, 1419284 SizeOfPredicates, 2 NumberOfNonLiveVariables, 906 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 2058/2262 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 correct! Received shutdown request...