./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.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_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/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 ef15c4790969d8e640b2241771e44174daa41407 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 07:40:47,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:47,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:47,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:47,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:47,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:47,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:47,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:47,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:47,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:47,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:47,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:47,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:47,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:47,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:47,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:47,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:47,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:47,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:47,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:47,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:47,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:47,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:47,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:47,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:47,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:47,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:47,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:47,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:47,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:47,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:47,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:47,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:47,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:47,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:47,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:47,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:47,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:47,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:47,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:47,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:47,274 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:40:47,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:47,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:47,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:47,320 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:47,320 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:47,320 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:47,320 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:47,320 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:47,320 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:47,321 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:47,322 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:47,322 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:47,322 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:47,322 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:47,322 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:47,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:47,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:47,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:47,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:47,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:47,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:47,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:47,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:47,325 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:47,325 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:47,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:47,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:47,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:47,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:47,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:47,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:47,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:47,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:47,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:47,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:47,328 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:47,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:47,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:47,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:47,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:47,329 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_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef15c4790969d8e640b2241771e44174daa41407 [2020-11-28 07:40:47,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:47,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:47,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:47,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:47,653 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:47,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/bin/utaipan/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-11-28 07:40:47,721 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/bin/utaipan/data/e757e4a0e/a8616e4994524b1e9379ff425cea1bea/FLAGca9056a15 [2020-11-28 07:40:48,156 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:48,156 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-11-28 07:40:48,163 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/bin/utaipan/data/e757e4a0e/a8616e4994524b1e9379ff425cea1bea/FLAGca9056a15 [2020-11-28 07:40:48,533 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/bin/utaipan/data/e757e4a0e/a8616e4994524b1e9379ff425cea1bea [2020-11-28 07:40:48,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:48,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:48,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:48,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:48,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:48,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:48" (1/1) ... [2020-11-28 07:40:48,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ff3720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:48, skipping insertion in model container [2020-11-28 07:40:48,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:48" (1/1) ... [2020-11-28 07:40:48,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:48,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:48,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:48,867 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:48,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:48,941 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:48,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:48 WrapperNode [2020-11-28 07:40:48,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:48,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:48,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:48,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:48,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:48" (1/1) ... [2020-11-28 07:40:48,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:48" (1/1) ... [2020-11-28 07:40:48,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:48,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:48,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:48,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:48,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:48" (1/1) ... [2020-11-28 07:40:48,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:48" (1/1) ... [2020-11-28 07:40:48,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:48" (1/1) ... [2020-11-28 07:40:48,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:48" (1/1) ... [2020-11-28 07:40:48,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:48" (1/1) ... [2020-11-28 07:40:49,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:48" (1/1) ... [2020-11-28 07:40:49,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:48" (1/1) ... [2020-11-28 07:40:49,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:49,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:49,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:49,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:49,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/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 07:40:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:40:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:49,656 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:49,656 INFO L298 CfgBuilder]: Removed 38 assume(true) statements. [2020-11-28 07:40:49,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:49 BoogieIcfgContainer [2020-11-28 07:40:49,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:49,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:49,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:49,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:49,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:48" (1/3) ... [2020-11-28 07:40:49,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f4c58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:49, skipping insertion in model container [2020-11-28 07:40:49,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:48" (2/3) ... [2020-11-28 07:40:49,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f4c58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:49, skipping insertion in model container [2020-11-28 07:40:49,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:49" (3/3) ... [2020-11-28 07:40:49,674 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-11-28 07:40:49,691 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:49,696 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-11-28 07:40:49,707 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-11-28 07:40:49,758 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:49,758 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:49,758 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:49,758 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:49,758 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:49,759 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:49,759 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:49,759 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:49,784 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2020-11-28 07:40:49,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:40:49,802 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:49,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:49,805 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:49,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:49,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1642391666, now seen corresponding path program 1 times [2020-11-28 07:40:49,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:49,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573913545] [2020-11-28 07:40:49,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:50,075 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 07:40:50,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573913545] [2020-11-28 07:40:50,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:50,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:40:50,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637243396] [2020-11-28 07:40:50,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:50,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:50,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:50,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:50,097 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 4 states. [2020-11-28 07:40:50,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:50,303 INFO L93 Difference]: Finished difference Result 120 states and 161 transitions. [2020-11-28 07:40:50,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:50,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:40:50,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:50,321 INFO L225 Difference]: With dead ends: 120 [2020-11-28 07:40:50,322 INFO L226 Difference]: Without dead ends: 108 [2020-11-28 07:40:50,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:50,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-28 07:40:50,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 64. [2020-11-28 07:40:50,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-28 07:40:50,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-11-28 07:40:50,383 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 7 [2020-11-28 07:40:50,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:50,384 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-11-28 07:40:50,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:50,384 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-11-28 07:40:50,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:40:50,385 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:50,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:50,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:40:50,385 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:50,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:50,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1638017359, now seen corresponding path program 1 times [2020-11-28 07:40:50,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:50,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780258328] [2020-11-28 07:40:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:50,439 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 07:40:50,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780258328] [2020-11-28 07:40:50,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:50,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:40:50,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054570891] [2020-11-28 07:40:50,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:50,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:50,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:50,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:50,442 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 4 states. [2020-11-28 07:40:50,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:50,547 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-11-28 07:40:50,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:50,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:40:50,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:50,550 INFO L225 Difference]: With dead ends: 64 [2020-11-28 07:40:50,550 INFO L226 Difference]: Without dead ends: 62 [2020-11-28 07:40:50,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:50,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-28 07:40:50,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-11-28 07:40:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-28 07:40:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-11-28 07:40:50,565 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 7 [2020-11-28 07:40:50,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:50,565 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-11-28 07:40:50,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:50,566 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-11-28 07:40:50,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:40:50,566 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:50,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:50,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:40:50,567 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:50,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:50,568 INFO L82 PathProgramCache]: Analyzing trace with hash -761063381, now seen corresponding path program 1 times [2020-11-28 07:40:50,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:50,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343356577] [2020-11-28 07:40:50,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:50,657 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 07:40:50,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343356577] [2020-11-28 07:40:50,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:50,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:40:50,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4595227] [2020-11-28 07:40:50,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:50,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:50,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:50,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:50,660 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 4 states. [2020-11-28 07:40:50,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:50,839 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-11-28 07:40:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:50,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 07:40:50,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:50,841 INFO L225 Difference]: With dead ends: 68 [2020-11-28 07:40:50,841 INFO L226 Difference]: Without dead ends: 66 [2020-11-28 07:40:50,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:50,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-28 07:40:50,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-11-28 07:40:50,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-28 07:40:50,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-11-28 07:40:50,850 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 8 [2020-11-28 07:40:50,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:50,850 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-11-28 07:40:50,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:50,851 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-11-28 07:40:50,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:40:50,851 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:50,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:50,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:40:50,852 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:50,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:50,852 INFO L82 PathProgramCache]: Analyzing trace with hash 228608316, now seen corresponding path program 1 times [2020-11-28 07:40:50,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:50,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108639507] [2020-11-28 07:40:50,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:50,907 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 07:40:50,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108639507] [2020-11-28 07:40:50,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:50,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:40:50,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585120009] [2020-11-28 07:40:50,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:50,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:50,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:50,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:50,909 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 5 states. [2020-11-28 07:40:51,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:51,042 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-11-28 07:40:51,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:51,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 07:40:51,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:51,044 INFO L225 Difference]: With dead ends: 66 [2020-11-28 07:40:51,044 INFO L226 Difference]: Without dead ends: 64 [2020-11-28 07:40:51,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:51,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-28 07:40:51,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-11-28 07:40:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-28 07:40:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-11-28 07:40:51,053 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 10 [2020-11-28 07:40:51,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:51,053 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-11-28 07:40:51,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:51,053 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-11-28 07:40:51,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:40:51,054 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:51,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:51,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:40:51,055 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:51,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:51,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1237280145, now seen corresponding path program 1 times [2020-11-28 07:40:51,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:51,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105504585] [2020-11-28 07:40:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:51,126 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 07:40:51,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105504585] [2020-11-28 07:40:51,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:51,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:40:51,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645981818] [2020-11-28 07:40:51,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:51,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:51,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:51,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:51,129 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 5 states. [2020-11-28 07:40:51,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:51,265 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-11-28 07:40:51,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:51,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 07:40:51,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:51,267 INFO L225 Difference]: With dead ends: 64 [2020-11-28 07:40:51,267 INFO L226 Difference]: Without dead ends: 62 [2020-11-28 07:40:51,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:51,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-28 07:40:51,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-11-28 07:40:51,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-28 07:40:51,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-11-28 07:40:51,280 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 10 [2020-11-28 07:40:51,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:51,280 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-11-28 07:40:51,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:51,281 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-11-28 07:40:51,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:40:51,283 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:51,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:51,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:40:51,284 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:51,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:51,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1502458887, now seen corresponding path program 1 times [2020-11-28 07:40:51,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:51,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675343173] [2020-11-28 07:40:51,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:51,367 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 07:40:51,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675343173] [2020-11-28 07:40:51,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:51,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:40:51,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053490712] [2020-11-28 07:40:51,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:51,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:51,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:51,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:51,369 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 5 states. [2020-11-28 07:40:51,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:51,587 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2020-11-28 07:40:51,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:51,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 07:40:51,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:51,590 INFO L225 Difference]: With dead ends: 107 [2020-11-28 07:40:51,590 INFO L226 Difference]: Without dead ends: 105 [2020-11-28 07:40:51,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:51,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-28 07:40:51,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 59. [2020-11-28 07:40:51,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-28 07:40:51,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-11-28 07:40:51,598 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 11 [2020-11-28 07:40:51,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:51,598 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-11-28 07:40:51,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:51,598 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-11-28 07:40:51,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:40:51,599 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:51,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:51,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:40:51,599 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:51,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:51,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1503070595, now seen corresponding path program 1 times [2020-11-28 07:40:51,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:51,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756877180] [2020-11-28 07:40:51,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:51,662 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 07:40:51,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756877180] [2020-11-28 07:40:51,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:51,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:40:51,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329967959] [2020-11-28 07:40:51,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:51,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:51,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:51,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:51,664 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 4 states. [2020-11-28 07:40:51,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:51,747 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-11-28 07:40:51,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:51,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 07:40:51,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:51,749 INFO L225 Difference]: With dead ends: 60 [2020-11-28 07:40:51,749 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 07:40:51,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:51,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 07:40:51,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-11-28 07:40:51,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 07:40:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-11-28 07:40:51,756 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 11 [2020-11-28 07:40:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:51,756 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-11-28 07:40:51,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:51,756 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-11-28 07:40:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:40:51,761 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:51,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:51,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:40:51,761 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:51,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:51,762 INFO L82 PathProgramCache]: Analyzing trace with hash 299027233, now seen corresponding path program 1 times [2020-11-28 07:40:51,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:51,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514878099] [2020-11-28 07:40:51,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:51,824 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 07:40:51,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514878099] [2020-11-28 07:40:51,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:51,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:40:51,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035861054] [2020-11-28 07:40:51,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:51,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:51,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:51,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:51,826 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 4 states. [2020-11-28 07:40:51,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:51,903 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-11-28 07:40:51,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:51,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 07:40:51,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:51,904 INFO L225 Difference]: With dead ends: 56 [2020-11-28 07:40:51,904 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 07:40:51,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:51,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 07:40:51,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-11-28 07:40:51,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-28 07:40:51,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-11-28 07:40:51,910 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 11 [2020-11-28 07:40:51,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:51,910 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-11-28 07:40:51,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:51,910 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-11-28 07:40:51,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:40:51,912 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:51,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:51,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:40:51,913 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:51,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:51,914 INFO L82 PathProgramCache]: Analyzing trace with hash 668420985, now seen corresponding path program 1 times [2020-11-28 07:40:51,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:51,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050383260] [2020-11-28 07:40:51,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:52,093 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 07:40:52,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050383260] [2020-11-28 07:40:52,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:52,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:40:52,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496521631] [2020-11-28 07:40:52,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:52,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:52,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:52,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:52,095 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 6 states. [2020-11-28 07:40:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:52,273 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2020-11-28 07:40:52,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:40:52,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-28 07:40:52,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:52,276 INFO L225 Difference]: With dead ends: 117 [2020-11-28 07:40:52,276 INFO L226 Difference]: Without dead ends: 115 [2020-11-28 07:40:52,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:52,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-28 07:40:52,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 56. [2020-11-28 07:40:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 07:40:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-11-28 07:40:52,286 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 12 [2020-11-28 07:40:52,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:52,286 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-11-28 07:40:52,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:52,286 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-11-28 07:40:52,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:40:52,287 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:52,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:52,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:40:52,287 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:52,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:52,288 INFO L82 PathProgramCache]: Analyzing trace with hash 702813064, now seen corresponding path program 1 times [2020-11-28 07:40:52,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:52,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298438425] [2020-11-28 07:40:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:52,355 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 07:40:52,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298438425] [2020-11-28 07:40:52,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:52,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:40:52,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458448122] [2020-11-28 07:40:52,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:52,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:52,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:52,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:52,357 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 5 states. [2020-11-28 07:40:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:52,461 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-11-28 07:40:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:52,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 07:40:52,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:52,462 INFO L225 Difference]: With dead ends: 56 [2020-11-28 07:40:52,462 INFO L226 Difference]: Without dead ends: 54 [2020-11-28 07:40:52,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:52,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-28 07:40:52,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-28 07:40:52,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-28 07:40:52,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-11-28 07:40:52,467 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 12 [2020-11-28 07:40:52,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:52,467 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-11-28 07:40:52,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:52,468 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-11-28 07:40:52,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:40:52,468 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:52,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:52,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:40:52,469 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:52,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:52,469 INFO L82 PathProgramCache]: Analyzing trace with hash 700719752, now seen corresponding path program 1 times [2020-11-28 07:40:52,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:52,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500048678] [2020-11-28 07:40:52,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:52,548 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 07:40:52,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500048678] [2020-11-28 07:40:52,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:52,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:40:52,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183364730] [2020-11-28 07:40:52,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:52,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:52,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:52,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:52,550 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2020-11-28 07:40:52,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:52,673 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-11-28 07:40:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:52,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 07:40:52,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:52,674 INFO L225 Difference]: With dead ends: 69 [2020-11-28 07:40:52,674 INFO L226 Difference]: Without dead ends: 67 [2020-11-28 07:40:52,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:52,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-28 07:40:52,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 52. [2020-11-28 07:40:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-28 07:40:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-11-28 07:40:52,679 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 12 [2020-11-28 07:40:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:52,680 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-11-28 07:40:52,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:52,680 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-11-28 07:40:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:40:52,680 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:52,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:52,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:40:52,681 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:52,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:52,681 INFO L82 PathProgramCache]: Analyzing trace with hash -761568064, now seen corresponding path program 1 times [2020-11-28 07:40:52,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:52,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594601008] [2020-11-28 07:40:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:52,839 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 07:40:52,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594601008] [2020-11-28 07:40:52,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:52,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:40:52,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836707517] [2020-11-28 07:40:52,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:52,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:52,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:52,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:52,841 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 6 states. [2020-11-28 07:40:52,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:52,952 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-11-28 07:40:52,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:40:52,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-28 07:40:52,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:52,954 INFO L225 Difference]: With dead ends: 77 [2020-11-28 07:40:52,955 INFO L226 Difference]: Without dead ends: 75 [2020-11-28 07:40:52,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:40:52,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-28 07:40:52,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 52. [2020-11-28 07:40:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-28 07:40:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-11-28 07:40:52,960 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 13 [2020-11-28 07:40:52,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:52,960 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-11-28 07:40:52,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:52,961 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-11-28 07:40:52,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:40:52,961 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:52,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:52,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 07:40:52,962 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:52,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:52,962 INFO L82 PathProgramCache]: Analyzing trace with hash 312374664, now seen corresponding path program 1 times [2020-11-28 07:40:52,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:52,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418483952] [2020-11-28 07:40:52,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:53,120 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 07:40:53,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418483952] [2020-11-28 07:40:53,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:53,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:40:53,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602606556] [2020-11-28 07:40:53,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:53,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:53,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:53,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:53,122 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 6 states. [2020-11-28 07:40:53,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:53,237 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-11-28 07:40:53,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:40:53,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-28 07:40:53,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:53,239 INFO L225 Difference]: With dead ends: 75 [2020-11-28 07:40:53,239 INFO L226 Difference]: Without dead ends: 71 [2020-11-28 07:40:53,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:53,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-28 07:40:53,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2020-11-28 07:40:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 07:40:53,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2020-11-28 07:40:53,245 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 13 [2020-11-28 07:40:53,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:53,247 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2020-11-28 07:40:53,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:53,247 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2020-11-28 07:40:53,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:40:53,252 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:53,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:53,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 07:40:53,253 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:53,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:53,253 INFO L82 PathProgramCache]: Analyzing trace with hash 312936722, now seen corresponding path program 1 times [2020-11-28 07:40:53,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:53,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338888281] [2020-11-28 07:40:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:53,307 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 07:40:53,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338888281] [2020-11-28 07:40:53,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:53,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:40:53,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504491653] [2020-11-28 07:40:53,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:53,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:53,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:53,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:53,308 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 5 states. [2020-11-28 07:40:53,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:53,423 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-11-28 07:40:53,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:53,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 07:40:53,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:53,425 INFO L225 Difference]: With dead ends: 78 [2020-11-28 07:40:53,425 INFO L226 Difference]: Without dead ends: 76 [2020-11-28 07:40:53,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:53,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-28 07:40:53,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 56. [2020-11-28 07:40:53,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 07:40:53,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2020-11-28 07:40:53,430 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 13 [2020-11-28 07:40:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:53,430 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2020-11-28 07:40:53,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:53,431 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2020-11-28 07:40:53,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:40:53,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:53,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:53,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 07:40:53,432 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:53,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:53,432 INFO L82 PathProgramCache]: Analyzing trace with hash 247481924, now seen corresponding path program 1 times [2020-11-28 07:40:53,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:53,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033385331] [2020-11-28 07:40:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:53,561 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 07:40:53,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033385331] [2020-11-28 07:40:53,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:53,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:40:53,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032700853] [2020-11-28 07:40:53,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:53,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:53,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:53,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:53,563 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand 6 states. [2020-11-28 07:40:53,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:53,677 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2020-11-28 07:40:53,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:40:53,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-28 07:40:53,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:53,678 INFO L225 Difference]: With dead ends: 81 [2020-11-28 07:40:53,678 INFO L226 Difference]: Without dead ends: 79 [2020-11-28 07:40:53,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:53,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-28 07:40:53,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 59. [2020-11-28 07:40:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-28 07:40:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-11-28 07:40:53,684 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 13 [2020-11-28 07:40:53,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:53,684 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-11-28 07:40:53,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:53,684 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-11-28 07:40:53,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:40:53,685 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:53,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:53,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 07:40:53,685 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:53,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:53,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1111109925, now seen corresponding path program 1 times [2020-11-28 07:40:53,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:53,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228898761] [2020-11-28 07:40:53,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:53,827 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 07:40:53,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228898761] [2020-11-28 07:40:53,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:53,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:40:53,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569439865] [2020-11-28 07:40:53,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:53,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:53,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:53,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:53,829 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 6 states. [2020-11-28 07:40:53,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:53,959 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-11-28 07:40:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:40:53,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 07:40:53,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:53,960 INFO L225 Difference]: With dead ends: 86 [2020-11-28 07:40:53,960 INFO L226 Difference]: Without dead ends: 84 [2020-11-28 07:40:53,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:53,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-28 07:40:53,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 62. [2020-11-28 07:40:53,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-28 07:40:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-11-28 07:40:53,967 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 14 [2020-11-28 07:40:53,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:53,967 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-11-28 07:40:53,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:53,967 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-11-28 07:40:53,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:40:53,968 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:53,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:53,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 07:40:53,968 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:53,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:53,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1607116967, now seen corresponding path program 1 times [2020-11-28 07:40:53,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:53,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087072649] [2020-11-28 07:40:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:54,016 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 07:40:54,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087072649] [2020-11-28 07:40:54,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:54,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:40:54,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663474616] [2020-11-28 07:40:54,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:54,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:54,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:54,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:54,018 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 4 states. [2020-11-28 07:40:54,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:54,061 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-11-28 07:40:54,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:54,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-28 07:40:54,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:54,062 INFO L225 Difference]: With dead ends: 62 [2020-11-28 07:40:54,062 INFO L226 Difference]: Without dead ends: 60 [2020-11-28 07:40:54,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:54,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-28 07:40:54,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-11-28 07:40:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-28 07:40:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-11-28 07:40:54,067 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 15 [2020-11-28 07:40:54,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:54,068 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-11-28 07:40:54,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-11-28 07:40:54,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:40:54,068 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:54,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:54,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 07:40:54,069 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:54,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:54,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1718975462, now seen corresponding path program 1 times [2020-11-28 07:40:54,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:54,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137512778] [2020-11-28 07:40:54,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:54,117 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 07:40:54,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137512778] [2020-11-28 07:40:54,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:54,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:40:54,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519892443] [2020-11-28 07:40:54,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:54,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:54,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:54,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:54,119 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 4 states. [2020-11-28 07:40:54,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:54,180 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-11-28 07:40:54,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:40:54,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-28 07:40:54,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:54,181 INFO L225 Difference]: With dead ends: 60 [2020-11-28 07:40:54,181 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 07:40:54,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:54,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 07:40:54,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-28 07:40:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 07:40:54,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2020-11-28 07:40:54,186 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 16 [2020-11-28 07:40:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:54,186 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2020-11-28 07:40:54,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2020-11-28 07:40:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:40:54,187 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:54,187 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:54,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-28 07:40:54,187 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:54,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:54,188 INFO L82 PathProgramCache]: Analyzing trace with hash -218884350, now seen corresponding path program 1 times [2020-11-28 07:40:54,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:54,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466521192] [2020-11-28 07:40:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:54,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:54,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466521192] [2020-11-28 07:40:54,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399820338] [2020-11-28 07:40:54,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/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 07:40:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:54,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:40:54,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:54,619 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:40:54,638 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 07:40:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:54,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:54,682 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:40:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:40:54,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1497546391] [2020-11-28 07:40:54,747 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2020-11-28 07:40:54,747 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:40:54,753 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:40:54,760 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:40:54,760 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:40:55,430 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:40:55,857 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-11-28 07:40:56,071 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-11-28 07:40:56,301 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-11-28 07:40:56,567 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-11-28 07:40:56,881 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-11-28 07:40:57,221 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-11-28 07:40:57,843 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-11-28 07:40:58,514 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2020-11-28 07:40:58,779 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-11-28 07:40:59,129 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-11-28 07:40:59,437 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2020-11-28 07:40:59,439 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:40:59,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:40:59,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 13 [2020-11-28 07:40:59,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222385955] [2020-11-28 07:40:59,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 07:40:59,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:59,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 07:40:59,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-11-28 07:40:59,441 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 13 states. [2020-11-28 07:40:59,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:59,777 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2020-11-28 07:40:59,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 07:40:59,777 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2020-11-28 07:40:59,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:59,778 INFO L225 Difference]: With dead ends: 103 [2020-11-28 07:40:59,778 INFO L226 Difference]: Without dead ends: 101 [2020-11-28 07:40:59,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2020-11-28 07:40:59,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-28 07:40:59,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 52. [2020-11-28 07:40:59,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-28 07:40:59,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-11-28 07:40:59,782 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 17 [2020-11-28 07:40:59,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:59,782 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-11-28 07:40:59,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 07:40:59,783 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-11-28 07:40:59,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:40:59,783 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:59,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:00,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:00,005 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:00,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:00,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1729755036, now seen corresponding path program 1 times [2020-11-28 07:41:00,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:00,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165890805] [2020-11-28 07:41:00,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:00,102 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 07:41:00,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165890805] [2020-11-28 07:41:00,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:00,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:41:00,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248258882] [2020-11-28 07:41:00,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:41:00,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:00,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:41:00,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:41:00,104 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 6 states. [2020-11-28 07:41:00,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:00,234 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2020-11-28 07:41:00,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:41:00,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-28 07:41:00,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:00,235 INFO L225 Difference]: With dead ends: 67 [2020-11-28 07:41:00,235 INFO L226 Difference]: Without dead ends: 65 [2020-11-28 07:41:00,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:41:00,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-28 07:41:00,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 47. [2020-11-28 07:41:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 07:41:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-11-28 07:41:00,240 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 17 [2020-11-28 07:41:00,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:00,240 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-11-28 07:41:00,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:41:00,240 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-11-28 07:41:00,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:41:00,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:00,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:00,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-11-28 07:41:00,242 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:00,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:00,242 INFO L82 PathProgramCache]: Analyzing trace with hash -63455725, now seen corresponding path program 1 times [2020-11-28 07:41:00,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:00,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161549220] [2020-11-28 07:41:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:00,304 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 07:41:00,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161549220] [2020-11-28 07:41:00,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:00,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:41:00,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908232069] [2020-11-28 07:41:00,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:41:00,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:00,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:41:00,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:41:00,306 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 6 states. [2020-11-28 07:41:00,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:00,425 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2020-11-28 07:41:00,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:41:00,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-28 07:41:00,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:00,426 INFO L225 Difference]: With dead ends: 47 [2020-11-28 07:41:00,426 INFO L226 Difference]: Without dead ends: 43 [2020-11-28 07:41:00,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:41:00,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-28 07:41:00,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-11-28 07:41:00,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 07:41:00,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-11-28 07:41:00,431 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 18 [2020-11-28 07:41:00,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:00,431 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-11-28 07:41:00,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:41:00,431 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-11-28 07:41:00,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:41:00,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:00,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:00,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-11-28 07:41:00,432 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:00,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:00,432 INFO L82 PathProgramCache]: Analyzing trace with hash -128348465, now seen corresponding path program 1 times [2020-11-28 07:41:00,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:00,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611383474] [2020-11-28 07:41:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:00,494 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 07:41:00,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611383474] [2020-11-28 07:41:00,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:00,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:41:00,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052553572] [2020-11-28 07:41:00,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:41:00,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:00,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:41:00,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:41:00,496 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-11-28 07:41:00,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:00,602 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2020-11-28 07:41:00,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:41:00,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-28 07:41:00,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:00,605 INFO L225 Difference]: With dead ends: 50 [2020-11-28 07:41:00,605 INFO L226 Difference]: Without dead ends: 19 [2020-11-28 07:41:00,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:41:00,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-28 07:41:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-28 07:41:00,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 07:41:00,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-28 07:41:00,608 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 18 [2020-11-28 07:41:00,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:00,608 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-28 07:41:00,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:41:00,608 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-28 07:41:00,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:41:00,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:00,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:00,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-11-28 07:41:00,609 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:00,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:00,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1796737623, now seen corresponding path program 1 times [2020-11-28 07:41:00,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:00,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010641859] [2020-11-28 07:41:00,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:00,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010641859] [2020-11-28 07:41:00,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838533842] [2020-11-28 07:41:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/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 07:41:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:00,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:41:00,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:00,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:41:00,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [441653289] [2020-11-28 07:41:00,967 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2020-11-28 07:41:00,967 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:41:00,967 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:41:00,967 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:41:00,967 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:41:01,395 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:41:01,765 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2020-11-28 07:41:01,945 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-11-28 07:41:02,101 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-11-28 07:41:02,285 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-11-28 07:41:02,523 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-11-28 07:41:02,792 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-11-28 07:41:03,424 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2020-11-28 07:41:04,008 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2020-11-28 07:41:04,242 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-11-28 07:41:04,498 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2020-11-28 07:41:04,801 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2020-11-28 07:41:05,051 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2020-11-28 07:41:05,333 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-11-28 07:41:05,597 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-11-28 07:41:05,597 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:41:05,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:41:05,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 13 [2020-11-28 07:41:05,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253093385] [2020-11-28 07:41:05,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 07:41:05,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:05,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 07:41:05,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2020-11-28 07:41:05,599 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 13 states. [2020-11-28 07:41:05,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:05,761 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-11-28 07:41:05,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 07:41:05,761 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-11-28 07:41:05,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:05,762 INFO L225 Difference]: With dead ends: 30 [2020-11-28 07:41:05,762 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:41:05,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2020-11-28 07:41:05,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:41:05,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:41:05,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:41:05,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:41:05,763 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 07:41:05,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:05,763 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:41:05,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 07:41:05,763 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:41:05,763 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:41:05,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-11-28 07:41:05,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:41:06,344 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 15 [2020-11-28 07:41:06,496 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-11-28 07:41:06,698 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 25 [2020-11-28 07:41:06,821 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 15 [2020-11-28 07:41:06,823 INFO L274 CegarLoopResult]: For program point L349(lines 349 358) no Hoare annotation was computed. [2020-11-28 07:41:06,823 INFO L270 CegarLoopResult]: At program point L250(lines 102 252) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (<= 1 ULTIMATE.start_main_~main__t~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0))) [2020-11-28 07:41:06,823 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,823 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,823 INFO L274 CegarLoopResult]: For program point L102(lines 102 252) no Hoare annotation was computed. [2020-11-28 07:41:06,823 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:41:06,823 INFO L274 CegarLoopResult]: For program point L20(lines 20 374) no Hoare annotation was computed. [2020-11-28 07:41:06,823 INFO L274 CegarLoopResult]: For program point L235(lines 235 243) no Hoare annotation was computed. [2020-11-28 07:41:06,823 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,823 INFO L274 CegarLoopResult]: For program point L4-2(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L4-4(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L4-6(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L4-8(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L4-10(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L153(lines 153 161) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L4-12(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L54(lines 54 254) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L4-14(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L4-16(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L4-18(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L4-20(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L4-22(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L4-24(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L4-26(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L4-28(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,824 INFO L274 CegarLoopResult]: For program point L71(lines 71 95) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point L4-30(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point L4-32(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point L187(lines 187 197) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point L337(lines 337 360) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point L106(lines 106 210) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point L24(lines 24 369) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point L289(lines 289 363) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point L223(lines 223 245) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point L141(lines 141 163) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point L42(lines 42 256) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point L125(lines 125 202) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,825 INFO L277 CegarLoopResult]: At program point L373(lines 15 375) the Hoare annotation is: true [2020-11-28 07:41:06,826 INFO L274 CegarLoopResult]: For program point L175(lines 175 199) no Hoare annotation was computed. [2020-11-28 07:41:06,826 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,826 INFO L270 CegarLoopResult]: At program point L357(lines 283 364) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~main__t~0 0))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse3 .cse1) (and .cse3 (<= 1 ULTIMATE.start_main_~main__t~0)))))) (or (and .cse2 .cse1) (and .cse2 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~16 0))))))) (or (and .cse0 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse1) (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse0 (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~17))))) [2020-11-28 07:41:06,826 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,826 INFO L274 CegarLoopResult]: For program point L308(lines 308 316) no Hoare annotation was computed. [2020-11-28 07:41:06,826 INFO L274 CegarLoopResult]: For program point L325(lines 325 362) no Hoare annotation was computed. [2020-11-28 07:41:06,826 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,826 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,826 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,826 INFO L274 CegarLoopResult]: For program point L277(lines 277 364) no Hoare annotation was computed. [2020-11-28 07:41:06,826 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,826 INFO L274 CegarLoopResult]: For program point L113(lines 113 204) no Hoare annotation was computed. [2020-11-28 07:41:06,826 INFO L270 CegarLoopResult]: At program point L328(lines 32 368) the Hoare annotation is: (let ((.cse1 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0)) (.cse2 (<= ULTIMATE.start_main_~main__t~0 1))) (let ((.cse0 (let ((.cse3 (or (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)) (and (<= 0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~main__t~0 0)))) (.cse4 (<= 0 ULTIMATE.start_main_~main__t~0))) (or (and .cse3 .cse4 .cse1 .cse2) (and .cse3 .cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 0))))))) (or (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse0 (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~17)) (and (not (= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) .cse1 .cse0 .cse2)))) [2020-11-28 07:41:06,827 INFO L270 CegarLoopResult]: At program point L196(lines 60 254) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (<= 1 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0))) [2020-11-28 07:41:06,827 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,827 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,827 INFO L274 CegarLoopResult]: For program point L296(lines 296 318) no Hoare annotation was computed. [2020-11-28 07:41:06,827 INFO L274 CegarLoopResult]: For program point L32(lines 32 368) no Hoare annotation was computed. [2020-11-28 07:41:06,827 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,827 INFO L274 CegarLoopResult]: For program point L83(lines 83 93) no Hoare annotation was computed. [2020-11-28 07:41:06,827 INFO L277 CegarLoopResult]: At program point L315(lines 32 368) the Hoare annotation is: true [2020-11-28 07:41:06,827 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:41:06,827 INFO L274 CegarLoopResult]: For program point L216(lines 216 251) no Hoare annotation was computed. [2020-11-28 07:41:06,827 INFO L274 CegarLoopResult]: For program point L266(lines 266 366) no Hoare annotation was computed. [2020-11-28 07:41:06,827 INFO L274 CegarLoopResult]: For program point L134(lines 134 201) no Hoare annotation was computed. [2020-11-28 07:41:06,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:41:06 BoogieIcfgContainer [2020-11-28 07:41:06,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:41:06,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:41:06,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:41:06,847 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:41:06,847 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:49" (3/4) ... [2020-11-28 07:41:06,856 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:41:06,874 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 07:41:06,874 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:41:06,875 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:41:06,875 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:41:06,947 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b14afa6a-029d-4b3b-8bd4-ee03c657fd4c/bin/utaipan/witness.graphml [2020-11-28 07:41:06,947 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:41:06,948 INFO L168 Benchmark]: Toolchain (without parser) took 18411.78 ms. Allocated memory was 100.7 MB in the beginning and 220.2 MB in the end (delta: 119.5 MB). Free memory was 63.0 MB in the beginning and 158.9 MB in the end (delta: -95.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:06,949 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 100.7 MB. Free memory is still 79.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:06,949 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.25 ms. Allocated memory is still 100.7 MB. Free memory was 62.8 MB in the beginning and 73.9 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:06,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.89 ms. Allocated memory is still 100.7 MB. Free memory was 73.9 MB in the beginning and 72.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:06,950 INFO L168 Benchmark]: Boogie Preprocessor took 42.78 ms. Allocated memory is still 100.7 MB. Free memory was 72.0 MB in the beginning and 70.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:06,950 INFO L168 Benchmark]: RCFGBuilder took 631.96 ms. Allocated memory is still 100.7 MB. Free memory was 70.4 MB in the beginning and 40.1 MB in the end (delta: 30.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:06,951 INFO L168 Benchmark]: TraceAbstraction took 17187.10 ms. Allocated memory was 100.7 MB in the beginning and 220.2 MB in the end (delta: 119.5 MB). Free memory was 39.6 MB in the beginning and 165.2 MB in the end (delta: -125.6 MB). Peak memory consumption was 96.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:06,951 INFO L168 Benchmark]: Witness Printer took 100.89 ms. Allocated memory is still 220.2 MB. Free memory was 165.2 MB in the beginning and 158.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:06,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 100.7 MB. Free memory is still 79.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 401.25 ms. Allocated memory is still 100.7 MB. Free memory was 62.8 MB in the beginning and 73.9 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.89 ms. Allocated memory is still 100.7 MB. Free memory was 73.9 MB in the beginning and 72.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.78 ms. Allocated memory is still 100.7 MB. Free memory was 72.0 MB in the beginning and 70.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 631.96 ms. Allocated memory is still 100.7 MB. Free memory was 70.4 MB in the beginning and 40.1 MB in the end (delta: 30.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17187.10 ms. Allocated memory was 100.7 MB in the beginning and 220.2 MB in the end (delta: 119.5 MB). Free memory was 39.6 MB in the beginning and 165.2 MB in the end (delta: -125.6 MB). Peak memory consumption was 96.7 MB. Max. memory is 16.1 GB. * Witness Printer took 100.89 ms. Allocated memory is still 220.2 MB. Free memory was 165.2 MB in the beginning and 158.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: ((main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((main__t < main__tagbuf_len && (((((!(__VERIFIER_assert__cond == 0) || (0 <= main__tagbuf_len && main__t == 0)) && 0 <= main__t) && 0 < main__tagbuf_len) && main__t <= 1) || (((!(__VERIFIER_assert__cond == 0) || (0 <= main__tagbuf_len && main__t == 0)) && 0 <= main__t) && !(__VERIFIER_assert__cond == 0)))) && 1 <= __VERIFIER_assert__cond) || (((!(main__t == main__tagbuf_len) && 0 < main__tagbuf_len) && (((((!(__VERIFIER_assert__cond == 0) || (0 <= main__tagbuf_len && main__t == 0)) && 0 <= main__t) && 0 < main__tagbuf_len) && main__t <= 1) || (((!(__VERIFIER_assert__cond == 0) || (0 <= main__tagbuf_len && main__t == 0)) && 0 <= main__t) && !(__VERIFIER_assert__cond == 0)))) && main__t <= 1) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 283]: Loop Invariant Derived loop invariant: ((((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && main__t == 0) || (((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && !(__VERIFIER_assert__cond == 0))) && 0 < main__tagbuf_len) && main__t == 0) || ((main__t < main__tagbuf_len && ((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && main__t == 0) || (((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && !(__VERIFIER_assert__cond == 0)))) && 1 <= __VERIFIER_assert__cond) - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: ((!(__VERIFIER_assert__cond == 0) && 1 <= main__t) && main__t <= main__tagbuf_len) && !(__VERIFIER_assert__cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 69 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.2s, OverallIterations: 23, TraceHistogramMax: 2, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 926 SDtfs, 1522 SDslu, 1358 SDs, 0 SdLazy, 1696 SolverSat, 168 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 261 GetRequests, 104 SyntacticMatches, 10 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 10.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 335 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 19 NumberOfFragments, 240 HoareAnnotationTreeSize, 6 FomulaSimplifications, 618442 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 114646 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 331 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 339 ConstructedInterpolants, 0 QuantifiedInterpolants, 18819 SizeOfPredicates, 10 NumberOfNonLiveVariables, 233 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 27 InterpolantComputations, 21 PerfectInterpolantSequences, 8/24 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...