./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label49.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label49.c -s /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/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 0899c1dba001c29029a8856598ba067fadfc69b9 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 16:02:31,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 16:02:31,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 16:02:31,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 16:02:31,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 16:02:31,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 16:02:31,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 16:02:31,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 16:02:31,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 16:02:31,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 16:02:31,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 16:02:31,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 16:02:31,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 16:02:31,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 16:02:31,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 16:02:31,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 16:02:31,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 16:02:31,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 16:02:31,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 16:02:31,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 16:02:31,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 16:02:31,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 16:02:31,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 16:02:31,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 16:02:31,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 16:02:31,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 16:02:31,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 16:02:31,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 16:02:31,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 16:02:31,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 16:02:31,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 16:02:31,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 16:02:31,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 16:02:31,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 16:02:31,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 16:02:31,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 16:02:31,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 16:02:31,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 16:02:31,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 16:02:31,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 16:02:31,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 16:02:31,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 16:02:31,199 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 16:02:31,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 16:02:31,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 16:02:31,200 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 16:02:31,200 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 16:02:31,200 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 16:02:31,200 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 16:02:31,200 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 16:02:31,200 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 16:02:31,201 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 16:02:31,201 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 16:02:31,201 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 16:02:31,201 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 16:02:31,201 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 16:02:31,201 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 16:02:31,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 16:02:31,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 16:02:31,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 16:02:31,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 16:02:31,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 16:02:31,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 16:02:31,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 16:02:31,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 16:02:31,202 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 16:02:31,203 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 16:02:31,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 16:02:31,203 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 16:02:31,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 16:02:31,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 16:02:31,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 16:02:31,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:02:31,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 16:02:31,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 16:02:31,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 16:02:31,204 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 16:02:31,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 16:02:31,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 16:02:31,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 16:02:31,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 16:02:31,204 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_565df479-97be-4c7f-84ec-4c4fc16fa5b1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0899c1dba001c29029a8856598ba067fadfc69b9 [2020-12-09 16:02:31,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 16:02:31,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 16:02:31,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 16:02:31,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 16:02:31,401 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 16:02:31,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label49.c [2020-12-09 16:02:31,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan/data/56239d822/e9494ce8d7a148d6bccf8c59a1af5208/FLAG1bd8cad0b [2020-12-09 16:02:31,882 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 16:02:31,883 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/sv-benchmarks/c/eca-rers2012/Problem02_label49.c [2020-12-09 16:02:31,894 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan/data/56239d822/e9494ce8d7a148d6bccf8c59a1af5208/FLAG1bd8cad0b [2020-12-09 16:02:31,907 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan/data/56239d822/e9494ce8d7a148d6bccf8c59a1af5208 [2020-12-09 16:02:31,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 16:02:31,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 16:02:31,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 16:02:31,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 16:02:31,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 16:02:31,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:02:31" (1/1) ... [2020-12-09 16:02:31,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109e17b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:02:31, skipping insertion in model container [2020-12-09 16:02:31,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:02:31" (1/1) ... [2020-12-09 16:02:31,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 16:02:31,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:02:32,159 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/sv-benchmarks/c/eca-rers2012/Problem02_label49.c[19626,19639] [2020-12-09 16:02:32,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:02:32,181 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 16:02:32,237 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/sv-benchmarks/c/eca-rers2012/Problem02_label49.c[19626,19639] [2020-12-09 16:02:32,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:02:32,253 INFO L208 MainTranslator]: Completed translation [2020-12-09 16:02:32,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:02:32 WrapperNode [2020-12-09 16:02:32,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 16:02:32,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 16:02:32,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 16:02:32,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 16:02:32,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:02:32" (1/1) ... [2020-12-09 16:02:32,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:02:32" (1/1) ... [2020-12-09 16:02:32,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 16:02:32,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 16:02:32,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 16:02:32,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 16:02:32,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:02:32" (1/1) ... [2020-12-09 16:02:32,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:02:32" (1/1) ... [2020-12-09 16:02:32,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:02:32" (1/1) ... [2020-12-09 16:02:32,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:02:32" (1/1) ... [2020-12-09 16:02:32,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:02:32" (1/1) ... [2020-12-09 16:02:32,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:02:32" (1/1) ... [2020-12-09 16:02:32,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:02:32" (1/1) ... [2020-12-09 16:02:32,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 16:02:32,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 16:02:32,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 16:02:32,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 16:02:32,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:02:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/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 [2020-12-09 16:02:32,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 16:02:32,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 16:02:32,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 16:02:32,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 16:02:33,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 16:02:33,662 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 16:02:33,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:02:33 BoogieIcfgContainer [2020-12-09 16:02:33,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 16:02:33,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 16:02:33,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 16:02:33,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 16:02:33,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:02:31" (1/3) ... [2020-12-09 16:02:33,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535acc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:02:33, skipping insertion in model container [2020-12-09 16:02:33,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:02:32" (2/3) ... [2020-12-09 16:02:33,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535acc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:02:33, skipping insertion in model container [2020-12-09 16:02:33,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:02:33" (3/3) ... [2020-12-09 16:02:33,677 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label49.c [2020-12-09 16:02:33,690 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 16:02:33,694 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 16:02:33,704 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 16:02:33,725 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 16:02:33,725 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 16:02:33,725 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 16:02:33,725 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 16:02:33,725 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 16:02:33,725 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 16:02:33,725 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 16:02:33,725 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 16:02:33,736 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 16:02:33,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 16:02:33,742 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:02:33,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:02:33,743 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:02:33,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:02:33,747 INFO L82 PathProgramCache]: Analyzing trace with hash 925959695, now seen corresponding path program 1 times [2020-12-09 16:02:33,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:02:33,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245024931] [2020-12-09 16:02:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:02:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:02:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:02:33,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245024931] [2020-12-09 16:02:33,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:02:33,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:02:33,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062968643] [2020-12-09 16:02:33,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:02:33,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:02:34,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:02:34,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:02:34,004 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 16:02:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:02:34,358 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 16:02:34,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:02:34,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 16:02:34,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:02:34,370 INFO L225 Difference]: With dead ends: 251 [2020-12-09 16:02:34,371 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 16:02:34,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:02:34,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 16:02:34,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 16:02:34,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 16:02:34,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 288 transitions. [2020-12-09 16:02:34,417 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 288 transitions. Word has length 80 [2020-12-09 16:02:34,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:02:34,418 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 288 transitions. [2020-12-09 16:02:34,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:02:34,418 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 288 transitions. [2020-12-09 16:02:34,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 16:02:34,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:02:34,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:02:34,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 16:02:34,424 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:02:34,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:02:34,425 INFO L82 PathProgramCache]: Analyzing trace with hash 221760174, now seen corresponding path program 1 times [2020-12-09 16:02:34,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:02:34,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699298810] [2020-12-09 16:02:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:02:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:02:34,493 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:02:34,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699298810] [2020-12-09 16:02:34,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:02:34,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:02:34,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059375473] [2020-12-09 16:02:34,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:02:34,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:02:34,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:02:34,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:02:34,497 INFO L87 Difference]: Start difference. First operand 163 states and 288 transitions. Second operand 3 states. [2020-12-09 16:02:34,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:02:34,771 INFO L93 Difference]: Finished difference Result 485 states and 861 transitions. [2020-12-09 16:02:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:02:34,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-09 16:02:34,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:02:34,774 INFO L225 Difference]: With dead ends: 485 [2020-12-09 16:02:34,774 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 16:02:34,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:02:34,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 16:02:34,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 16:02:34,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 16:02:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 474 transitions. [2020-12-09 16:02:34,798 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 474 transitions. Word has length 98 [2020-12-09 16:02:34,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:02:34,799 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 474 transitions. [2020-12-09 16:02:34,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:02:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 474 transitions. [2020-12-09 16:02:34,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-09 16:02:34,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:02:34,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:02:34,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 16:02:34,802 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:02:34,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:02:34,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1583663150, now seen corresponding path program 1 times [2020-12-09 16:02:34,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:02:34,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185937048] [2020-12-09 16:02:34,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:02:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:02:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:02:34,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185937048] [2020-12-09 16:02:34,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:02:34,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:02:34,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592628472] [2020-12-09 16:02:34,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:02:34,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:02:34,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:02:34,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:02:34,864 INFO L87 Difference]: Start difference. First operand 323 states and 474 transitions. Second operand 3 states. [2020-12-09 16:02:34,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:02:34,999 INFO L93 Difference]: Finished difference Result 645 states and 947 transitions. [2020-12-09 16:02:34,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:02:34,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-09 16:02:35,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:02:35,001 INFO L225 Difference]: With dead ends: 645 [2020-12-09 16:02:35,001 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 16:02:35,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:02:35,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 16:02:35,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 16:02:35,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 16:02:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 434 transitions. [2020-12-09 16:02:35,015 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 434 transitions. Word has length 99 [2020-12-09 16:02:35,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:02:35,015 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 434 transitions. [2020-12-09 16:02:35,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:02:35,015 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 434 transitions. [2020-12-09 16:02:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 16:02:35,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:02:35,017 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:02:35,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 16:02:35,017 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:02:35,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:02:35,017 INFO L82 PathProgramCache]: Analyzing trace with hash -2134422969, now seen corresponding path program 1 times [2020-12-09 16:02:35,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:02:35,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869236656] [2020-12-09 16:02:35,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:02:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:02:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:02:35,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869236656] [2020-12-09 16:02:35,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:02:35,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:02:35,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790053157] [2020-12-09 16:02:35,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:02:35,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:02:35,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:02:35,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:02:35,060 INFO L87 Difference]: Start difference. First operand 323 states and 434 transitions. Second operand 3 states. [2020-12-09 16:02:35,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:02:35,303 INFO L93 Difference]: Finished difference Result 725 states and 982 transitions. [2020-12-09 16:02:35,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:02:35,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 16:02:35,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:02:35,305 INFO L225 Difference]: With dead ends: 725 [2020-12-09 16:02:35,305 INFO L226 Difference]: Without dead ends: 403 [2020-12-09 16:02:35,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:02:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-12-09 16:02:35,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-12-09 16:02:35,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-09 16:02:35,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 529 transitions. [2020-12-09 16:02:35,316 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 529 transitions. Word has length 103 [2020-12-09 16:02:35,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:02:35,316 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 529 transitions. [2020-12-09 16:02:35,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:02:35,316 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 529 transitions. [2020-12-09 16:02:35,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 16:02:35,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:02:35,318 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:02:35,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 16:02:35,318 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:02:35,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:02:35,319 INFO L82 PathProgramCache]: Analyzing trace with hash -2118165487, now seen corresponding path program 1 times [2020-12-09 16:02:35,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:02:35,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219789903] [2020-12-09 16:02:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:02:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:02:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:02:35,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219789903] [2020-12-09 16:02:35,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659558317] [2020-12-09 16:02:35,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/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 [2020-12-09 16:02:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:02:35,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 16:02:35,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:02:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 16:02:35,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:02:35,754 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 16:02:35,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 16:02:35,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 16:02:35,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881282373] [2020-12-09 16:02:35,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:02:35,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:02:35,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:02:35,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:02:35,757 INFO L87 Difference]: Start difference. First operand 403 states and 529 transitions. Second operand 3 states. [2020-12-09 16:02:35,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:02:35,966 INFO L93 Difference]: Finished difference Result 1125 states and 1469 transitions. [2020-12-09 16:02:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:02:35,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-09 16:02:35,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:02:35,970 INFO L225 Difference]: With dead ends: 1125 [2020-12-09 16:02:35,970 INFO L226 Difference]: Without dead ends: 723 [2020-12-09 16:02:35,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:02:35,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-12-09 16:02:35,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-12-09 16:02:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-12-09 16:02:35,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 924 transitions. [2020-12-09 16:02:35,990 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 924 transitions. Word has length 107 [2020-12-09 16:02:35,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:02:35,991 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 924 transitions. [2020-12-09 16:02:35,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:02:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 924 transitions. [2020-12-09 16:02:35,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-09 16:02:35,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:02:35,993 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:02:36,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:02:36,194 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:02:36,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:02:36,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1229825696, now seen corresponding path program 1 times [2020-12-09 16:02:36,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:02:36,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060203397] [2020-12-09 16:02:36,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:02:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:02:36,281 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:02:36,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060203397] [2020-12-09 16:02:36,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945769962] [2020-12-09 16:02:36,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/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 [2020-12-09 16:02:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:02:36,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 16:02:36,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:02:36,410 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:02:36,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:02:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:02:36,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 16:02:36,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 16:02:36,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048772656] [2020-12-09 16:02:36,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:02:36,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:02:36,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:02:36,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:02:36,487 INFO L87 Difference]: Start difference. First operand 723 states and 924 transitions. Second operand 3 states. [2020-12-09 16:02:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:02:36,704 INFO L93 Difference]: Finished difference Result 1365 states and 1762 transitions. [2020-12-09 16:02:36,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:02:36,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-09 16:02:36,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:02:36,707 INFO L225 Difference]: With dead ends: 1365 [2020-12-09 16:02:36,708 INFO L226 Difference]: Without dead ends: 643 [2020-12-09 16:02:36,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:02:36,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-12-09 16:02:36,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-12-09 16:02:36,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-12-09 16:02:36,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 780 transitions. [2020-12-09 16:02:36,720 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 780 transitions. Word has length 113 [2020-12-09 16:02:36,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:02:36,721 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 780 transitions. [2020-12-09 16:02:36,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:02:36,721 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 780 transitions. [2020-12-09 16:02:36,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-09 16:02:36,722 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:02:36,722 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:02:36,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:02:36,923 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:02:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:02:36,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1094945951, now seen corresponding path program 1 times [2020-12-09 16:02:36,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:02:36,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786175446] [2020-12-09 16:02:36,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:02:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:02:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-09 16:02:36,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786175446] [2020-12-09 16:02:36,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850184937] [2020-12-09 16:02:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:02:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:02:37,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 16:02:37,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:02:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 16:02:37,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:02:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 16:02:37,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 16:02:37,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 16:02:37,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324800669] [2020-12-09 16:02:37,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:02:37,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:02:37,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:02:37,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:02:37,199 INFO L87 Difference]: Start difference. First operand 643 states and 780 transitions. Second operand 3 states. [2020-12-09 16:02:37,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:02:37,450 INFO L93 Difference]: Finished difference Result 1365 states and 1684 transitions. [2020-12-09 16:02:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:02:37,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-12-09 16:02:37,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:02:37,454 INFO L225 Difference]: With dead ends: 1365 [2020-12-09 16:02:37,454 INFO L226 Difference]: Without dead ends: 803 [2020-12-09 16:02:37,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:02:37,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-12-09 16:02:37,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2020-12-09 16:02:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 16:02:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 958 transitions. [2020-12-09 16:02:37,470 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 958 transitions. Word has length 121 [2020-12-09 16:02:37,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:02:37,470 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 958 transitions. [2020-12-09 16:02:37,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:02:37,470 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 958 transitions. [2020-12-09 16:02:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-09 16:02:37,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:02:37,472 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:02:37,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:02:37,673 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:02:37,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:02:37,673 INFO L82 PathProgramCache]: Analyzing trace with hash 245567510, now seen corresponding path program 1 times [2020-12-09 16:02:37,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:02:37,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461478382] [2020-12-09 16:02:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:02:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:02:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 16:02:37,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461478382] [2020-12-09 16:02:37,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:02:37,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:02:37,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736488123] [2020-12-09 16:02:37,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:02:37,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:02:37,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:02:37,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:02:37,724 INFO L87 Difference]: Start difference. First operand 803 states and 958 transitions. Second operand 3 states. [2020-12-09 16:02:37,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:02:37,998 INFO L93 Difference]: Finished difference Result 1925 states and 2312 transitions. [2020-12-09 16:02:37,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:02:37,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2020-12-09 16:02:37,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:02:38,001 INFO L225 Difference]: With dead ends: 1925 [2020-12-09 16:02:38,001 INFO L226 Difference]: Without dead ends: 803 [2020-12-09 16:02:38,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:02:38,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-12-09 16:02:38,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2020-12-09 16:02:38,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 16:02:38,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 923 transitions. [2020-12-09 16:02:38,017 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 923 transitions. Word has length 155 [2020-12-09 16:02:38,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:02:38,018 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 923 transitions. [2020-12-09 16:02:38,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:02:38,018 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 923 transitions. [2020-12-09 16:02:38,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-12-09 16:02:38,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:02:38,021 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:02:38,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 16:02:38,021 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:02:38,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:02:38,022 INFO L82 PathProgramCache]: Analyzing trace with hash -423629778, now seen corresponding path program 1 times [2020-12-09 16:02:38,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:02:38,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078982388] [2020-12-09 16:02:38,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:02:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:02:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 146 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:02:38,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078982388] [2020-12-09 16:02:38,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611345937] [2020-12-09 16:02:38,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:02:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:02:38,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 16:02:38,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:02:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 130 proven. 80 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-09 16:02:38,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:02:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 130 proven. 80 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-09 16:02:38,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1400959576] [2020-12-09 16:02:38,594 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2020-12-09 16:02:38,595 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:02:38,599 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:02:38,605 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:02:38,605 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:02:47,750 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 16:02:47,874 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 16:02:48,036 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 16:02:48,163 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 16:02:48,320 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 16:02:48,449 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 16:02:48,629 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 153 [2020-12-09 16:02:48,754 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 16:02:48,884 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 16:02:49,006 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 16:02:53,004 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 46 [2020-12-09 16:02:53,172 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 10476 conjuctions. This might take some time... [2020-12-09 16:02:53,377 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 196 conjuctions. [2020-12-09 16:02:53,382 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 46 [2020-12-09 16:02:53,524 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 10476 conjuctions. This might take some time... [2020-12-09 16:02:53,728 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 196 conjuctions. [2020-12-09 16:02:53,802 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 46 [2020-12-09 16:02:53,940 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 10476 conjuctions. This might take some time... [2020-12-09 16:02:54,144 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 196 conjuctions. [2020-12-09 16:02:57,194 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 16:02:57,492 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 96 [2020-12-09 16:02:57,712 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 96 [2020-12-09 16:02:57,962 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 102 [2020-12-09 16:02:58,255 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 107 [2020-12-09 16:02:58,493 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2020-12-09 16:02:58,787 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2020-12-09 16:02:59,179 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-12-09 16:03:01,424 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-12-09 16:03:07,505 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:03:07,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:03:07,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2020-12-09 16:03:07,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986705731] [2020-12-09 16:03:07,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 16:03:07,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:03:07,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 16:03:07,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-12-09 16:03:07,506 INFO L87 Difference]: Start difference. First operand 803 states and 923 transitions. Second operand 8 states. [2020-12-09 16:03:08,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:03:08,395 INFO L93 Difference]: Finished difference Result 1955 states and 2257 transitions. [2020-12-09 16:03:08,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-09 16:03:08,395 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-12-09 16:03:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:03:08,400 INFO L225 Difference]: With dead ends: 1955 [2020-12-09 16:03:08,400 INFO L226 Difference]: Without dead ends: 1233 [2020-12-09 16:03:08,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 454 SyntacticMatches, 180 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1821 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2020-12-09 16:03:08,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-12-09 16:03:08,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1203. [2020-12-09 16:03:08,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-12-09 16:03:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1377 transitions. [2020-12-09 16:03:08,422 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1377 transitions. Word has length 213 [2020-12-09 16:03:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:03:08,423 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1377 transitions. [2020-12-09 16:03:08,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 16:03:08,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1377 transitions. [2020-12-09 16:03:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-12-09 16:03:08,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:03:08,426 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:03:08,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:03:08,627 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:03:08,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:03:08,627 INFO L82 PathProgramCache]: Analyzing trace with hash 92076674, now seen corresponding path program 1 times [2020-12-09 16:03:08,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:03:08,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960259151] [2020-12-09 16:03:08,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:03:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:03:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2020-12-09 16:03:08,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960259151] [2020-12-09 16:03:08,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:03:08,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:03:08,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365013460] [2020-12-09 16:03:08,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:03:08,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:03:08,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:03:08,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:03:08,684 INFO L87 Difference]: Start difference. First operand 1203 states and 1377 transitions. Second operand 3 states. [2020-12-09 16:03:08,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:03:08,885 INFO L93 Difference]: Finished difference Result 1925 states and 2202 transitions. [2020-12-09 16:03:08,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:03:08,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-12-09 16:03:08,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:03:08,890 INFO L225 Difference]: With dead ends: 1925 [2020-12-09 16:03:08,890 INFO L226 Difference]: Without dead ends: 1203 [2020-12-09 16:03:08,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:03:08,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-12-09 16:03:08,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2020-12-09 16:03:08,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-12-09 16:03:08,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1369 transitions. [2020-12-09 16:03:08,908 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1369 transitions. Word has length 233 [2020-12-09 16:03:08,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:03:08,908 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1369 transitions. [2020-12-09 16:03:08,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:03:08,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1369 transitions. [2020-12-09 16:03:08,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-09 16:03:08,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:03:08,911 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:03:08,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1217 [2020-12-09 16:03:08,912 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:03:08,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:03:08,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1759913117, now seen corresponding path program 1 times [2020-12-09 16:03:08,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:03:08,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306114243] [2020-12-09 16:03:08,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:03:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:03:09,072 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 223 proven. 16 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-12-09 16:03:09,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306114243] [2020-12-09 16:03:09,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996800791] [2020-12-09 16:03:09,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:03:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:03:09,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 16:03:09,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:03:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-09 16:03:09,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:03:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-09 16:03:09,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 16:03:09,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-12-09 16:03:09,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627922090] [2020-12-09 16:03:09,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:03:09,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:03:09,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:03:09,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 16:03:09,415 INFO L87 Difference]: Start difference. First operand 1203 states and 1369 transitions. Second operand 3 states. [2020-12-09 16:03:09,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:03:09,621 INFO L93 Difference]: Finished difference Result 2565 states and 2926 transitions. [2020-12-09 16:03:09,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:03:09,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-09 16:03:09,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:03:09,624 INFO L225 Difference]: With dead ends: 2565 [2020-12-09 16:03:09,624 INFO L226 Difference]: Without dead ends: 883 [2020-12-09 16:03:09,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 479 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 16:03:09,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-12-09 16:03:09,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2020-12-09 16:03:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-12-09 16:03:09,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 940 transitions. [2020-12-09 16:03:09,638 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 940 transitions. Word has length 241 [2020-12-09 16:03:09,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:03:09,639 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 940 transitions. [2020-12-09 16:03:09,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:03:09,639 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 940 transitions. [2020-12-09 16:03:09,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-12-09 16:03:09,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:03:09,643 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:03:09,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1218 [2020-12-09 16:03:09,843 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:03:09,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:03:09,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1788109996, now seen corresponding path program 1 times [2020-12-09 16:03:09,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:03:09,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141932799] [2020-12-09 16:03:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:03:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:03:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 384 proven. 228 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-09 16:03:10,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141932799] [2020-12-09 16:03:10,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117606041] [2020-12-09 16:03:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:03:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:03:10,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 16:03:10,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:03:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 89 proven. 328 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-12-09 16:03:10,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:03:11,100 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 48 proven. 369 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-12-09 16:03:11,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1642241069] [2020-12-09 16:03:11,104 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2020-12-09 16:03:11,104 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:03:11,104 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:03:11,104 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:03:11,104 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:03:16,507 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 147 [2020-12-09 16:03:18,519 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-12-09 16:03:18,764 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:03:18,889 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:03:19,050 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:03:19,174 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:03:19,370 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 148 [2020-12-09 16:03:19,499 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:03:19,632 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:03:19,758 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:03:19,897 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-12-09 16:03:23,612 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:03:23,732 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:03:23,886 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:03:24,007 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:03:24,200 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 148 [2020-12-09 16:03:24,322 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:03:24,450 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:03:24,574 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 16:03:28,414 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 46 [2020-12-09 16:03:28,551 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 10476 conjuctions. This might take some time... [2020-12-09 16:03:28,761 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 196 conjuctions. [2020-12-09 16:03:28,765 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 46 [2020-12-09 16:03:28,903 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 10476 conjuctions. This might take some time... [2020-12-09 16:03:29,105 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 196 conjuctions. [2020-12-09 16:03:29,179 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 46 [2020-12-09 16:03:29,316 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 10476 conjuctions. This might take some time... [2020-12-09 16:03:29,524 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 196 conjuctions. [2020-12-09 16:03:32,946 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 16:03:33,249 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 96 [2020-12-09 16:03:33,440 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-12-09 16:03:33,778 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2020-12-09 16:03:34,025 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-12-09 16:03:34,322 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 108 [2020-12-09 16:03:34,519 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-12-09 16:03:34,788 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-12-09 16:03:37,537 WARN L197 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2020-12-09 16:03:50,325 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:03:50,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:03:50,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2020-12-09 16:03:50,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043008001] [2020-12-09 16:03:50,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 16:03:50,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:03:50,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 16:03:50,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2020-12-09 16:03:50,328 INFO L87 Difference]: Start difference. First operand 883 states and 940 transitions. Second operand 13 states. [2020-12-09 16:03:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:03:50,968 INFO L93 Difference]: Finished difference Result 1126 states and 1201 transitions. [2020-12-09 16:03:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 16:03:50,969 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 326 [2020-12-09 16:03:50,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:03:50,969 INFO L225 Difference]: With dead ends: 1126 [2020-12-09 16:03:50,969 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 16:03:50,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 694 SyntacticMatches, 269 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4145 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2020-12-09 16:03:50,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 16:03:50,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 16:03:50,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 16:03:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 16:03:50,971 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 326 [2020-12-09 16:03:50,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:03:50,971 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 16:03:50,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 16:03:50,971 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 16:03:50,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 16:03:51,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1219,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:03:51,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 16:03:51,436 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-12-09 16:03:51,619 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-12-09 16:03:51,621 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 16:03:51,621 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 16:03:51,621 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 16:03:51,622 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 557) no Hoare annotation was computed. [2020-12-09 16:03:51,623 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 16:03:51,624 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 16:03:51,624 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 16:03:51,624 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 16:03:51,624 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 16:03:51,624 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 16:03:51,624 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 16:03:51,624 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 16:03:51,624 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 16:03:51,624 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 16:03:51,624 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 16:03:51,624 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 16:03:51,624 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 16:03:51,624 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 16:03:51,624 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 16:03:51,624 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 16:03:51,625 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse11 (<= ~a28~0 7)) (.cse3 (<= ~a25~0 0)) (.cse0 (<= 9 ~a28~0)) (.cse1 (= ~a11~0 1)) (.cse2 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 10)) (.cse10 (= ~a25~0 1)) (.cse5 (= ~a25~0 ~a11~0)) (.cse7 (= ~a25~0 0)) (.cse8 (= ~a21~0 1)) (.cse9 (= ~a17~0 8)) (.cse6 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse0 .cse6 .cse7 .cse8 .cse9 .cse4) (and .cse6 .cse10 .cse11 .cse2) (and (<= 10 ~a28~0) .cse6 .cse2 .cse3 .cse4) (and .cse6 .cse8 .cse9 .cse10 (not .cse1)) (and .cse5 .cse7 .cse8 .cse9 .cse11) (and .cse1 .cse11 .cse2 .cse3) (and .cse0 .cse10 .cse1 .cse2 .cse4) (and .cse8 .cse9 .cse10 (= ~a28~0 10)) (and .cse5 .cse7 .cse8 .cse9 (not .cse6) (not (= 3 ULTIMATE.start_calculate_output_~input)) (= ~a28~0 8)))) [2020-12-09 16:03:51,625 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 16:03:51,625 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 16:03:51,625 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 16:03:51,625 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 16:03:51,625 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 16:03:51,625 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 16:03:51,625 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 16:03:51,625 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 16:03:51,625 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 16:03:51,625 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 16:03:51,625 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse11 (<= ~a28~0 7)) (.cse3 (<= ~a25~0 0)) (.cse0 (<= 9 ~a28~0)) (.cse1 (= ~a11~0 1)) (.cse2 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 10)) (.cse10 (= ~a25~0 1)) (.cse5 (= ~a25~0 ~a11~0)) (.cse7 (= ~a25~0 0)) (.cse8 (= ~a21~0 1)) (.cse9 (= ~a17~0 8)) (.cse6 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse0 .cse6 .cse7 .cse8 .cse9 .cse4) (and .cse6 .cse10 .cse11 .cse2) (and (<= 10 ~a28~0) .cse6 .cse2 .cse3 .cse4) (and .cse6 .cse8 .cse9 .cse10 (not .cse1)) (and .cse5 .cse7 .cse8 .cse9 .cse11) (and .cse1 .cse11 .cse2 .cse3) (and .cse0 .cse10 .cse1 .cse2 .cse4) (and .cse8 .cse9 .cse10 (= ~a28~0 10)) (and .cse5 .cse7 .cse8 .cse9 (not .cse6) (not (= 3 ULTIMATE.start_calculate_output_~input)) (= ~a28~0 8)))) [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L553-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L556-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 16:03:51,626 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 16:03:51,627 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 16:03:51,627 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 16:03:51,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:03:51 BoogieIcfgContainer [2020-12-09 16:03:51,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 16:03:51,641 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 16:03:51,641 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 16:03:51,642 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 16:03:51,642 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:02:33" (3/4) ... [2020-12-09 16:03:51,644 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 16:03:51,659 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 16:03:51,660 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 16:03:51,662 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 16:03:51,663 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 16:03:51,736 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_565df479-97be-4c7f-84ec-4c4fc16fa5b1/bin/utaipan/witness.graphml [2020-12-09 16:03:51,736 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 16:03:51,737 INFO L168 Benchmark]: Toolchain (without parser) took 79826.31 ms. Allocated memory was 83.9 MB in the beginning and 587.2 MB in the end (delta: 503.3 MB). Free memory was 42.7 MB in the beginning and 235.2 MB in the end (delta: -192.5 MB). Peak memory consumption was 312.9 MB. Max. memory is 16.1 GB. [2020-12-09 16:03:51,737 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 83.9 MB. Free memory was 60.7 MB in the beginning and 60.6 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:03:51,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.28 ms. Allocated memory is still 83.9 MB. Free memory was 64.0 MB in the beginning and 38.4 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-12-09 16:03:51,738 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.02 ms. Allocated memory is still 83.9 MB. Free memory was 38.4 MB in the beginning and 58.6 MB in the end (delta: -20.2 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-12-09 16:03:51,738 INFO L168 Benchmark]: Boogie Preprocessor took 41.51 ms. Allocated memory is still 83.9 MB. Free memory was 58.6 MB in the beginning and 53.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 16:03:51,738 INFO L168 Benchmark]: RCFGBuilder took 1312.00 ms. Allocated memory was 83.9 MB in the beginning and 130.0 MB in the end (delta: 46.1 MB). Free memory was 53.9 MB in the beginning and 49.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. [2020-12-09 16:03:51,738 INFO L168 Benchmark]: TraceAbstraction took 77974.31 ms. Allocated memory was 130.0 MB in the beginning and 587.2 MB in the end (delta: 457.2 MB). Free memory was 49.3 MB in the beginning and 250.9 MB in the end (delta: -201.6 MB). Peak memory consumption was 256.6 MB. Max. memory is 16.1 GB. [2020-12-09 16:03:51,739 INFO L168 Benchmark]: Witness Printer took 94.88 ms. Allocated memory is still 587.2 MB. Free memory was 250.9 MB in the beginning and 235.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 16:03:51,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 83.9 MB. Free memory was 60.7 MB in the beginning and 60.6 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 336.28 ms. Allocated memory is still 83.9 MB. Free memory was 64.0 MB in the beginning and 38.4 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.02 ms. Allocated memory is still 83.9 MB. Free memory was 38.4 MB in the beginning and 58.6 MB in the end (delta: -20.2 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.51 ms. Allocated memory is still 83.9 MB. Free memory was 58.6 MB in the beginning and 53.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1312.00 ms. Allocated memory was 83.9 MB in the beginning and 130.0 MB in the end (delta: 46.1 MB). Free memory was 53.9 MB in the beginning and 49.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 77974.31 ms. Allocated memory was 130.0 MB in the beginning and 587.2 MB in the end (delta: 457.2 MB). Free memory was 49.3 MB in the beginning and 250.9 MB in the end (delta: -201.6 MB). Peak memory consumption was 256.6 MB. Max. memory is 16.1 GB. * Witness Printer took 94.88 ms. Allocated memory is still 587.2 MB. Free memory was 250.9 MB in the beginning and 235.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 557]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((((((9 <= a28 && a11 == 1) && a17 <= 8) && a25 <= 0) && a28 <= 10) || ((((((a25 == a11 && 9 <= a28) && a19 == 1) && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 10)) || (((a19 == 1 && a25 == 1) && a28 <= 7) && a17 <= 8)) || ((((10 <= a28 && a19 == 1) && a17 <= 8) && a25 <= 0) && a28 <= 10)) || ((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1))) || ((((a25 == a11 && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 7)) || (((a11 == 1 && a28 <= 7) && a17 <= 8) && a25 <= 0)) || ((((9 <= a28 && a25 == 1) && a11 == 1) && a17 <= 8) && a28 <= 10)) || (((a21 == 1 && a17 == 8) && a25 == 1) && a28 == 10)) || ((((((a25 == a11 && a25 == 0) && a21 == 1) && a17 == 8) && !(a19 == 1)) && !(3 == input)) && a28 == 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((((9 <= a28 && a11 == 1) && a17 <= 8) && a25 <= 0) && a28 <= 10) || ((((((a25 == a11 && 9 <= a28) && a19 == 1) && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 10)) || (((a19 == 1 && a25 == 1) && a28 <= 7) && a17 <= 8)) || ((((10 <= a28 && a19 == 1) && a17 <= 8) && a25 <= 0) && a28 <= 10)) || ((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1))) || ((((a25 == a11 && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 7)) || (((a11 == 1 && a28 <= 7) && a17 <= 8) && a25 <= 0)) || ((((9 <= a28 && a25 == 1) && a11 == 1) && a17 <= 8) && a28 <= 10)) || (((a21 == 1 && a17 == 8) && a25 == 1) && a28 == 10)) || ((((((a25 == a11 && a25 == 0) && a21 == 1) && a17 == 8) && !(a19 == 1)) && !(3 == input)) && a28 == 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 77.4s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 801 SDtfs, 1458 SDslu, 133 SDs, 0 SdLazy, 4204 SolverSat, 695 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2831 GetRequests, 2310 SyntacticMatches, 452 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5972 ImplicationChecksByTransitivity, 28.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1203occurred in iteration=9, 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, 12 MinimizatonAttempts, 30 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 41 NumberOfFragments, 335 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1026 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 222 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 3010 NumberOfCodeBlocks, 3010 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 4107 ConstructedInterpolants, 0 QuantifiedInterpolants, 4165513 SizeOfPredicates, 16 NumberOfNonLiveVariables, 2416 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 24 InterpolantComputations, 14 PerfectInterpolantSequences, 3262/4486 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...