./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label42.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label42.c -s /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/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 662534f4746003a6d2cd07cf74c03b390809f7a7 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:05:19,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:05:19,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:05:19,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:05:19,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:05:19,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:05:19,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:05:19,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:05:19,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:05:19,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:05:19,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:05:19,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:05:19,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:05:19,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:05:19,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:05:19,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:05:19,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:05:19,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:05:19,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:05:19,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:05:19,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:05:19,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:05:19,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:05:19,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:05:19,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:05:19,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:05:19,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:05:19,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:05:19,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:05:19,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:05:19,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:05:19,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:05:19,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:05:19,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:05:19,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:05:19,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:05:19,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:05:19,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:05:19,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:05:19,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:05:19,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:05:19,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:05:19,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:05:19,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:05:19,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:05:19,322 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:05:19,322 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:05:19,323 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:05:19,323 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:05:19,323 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:05:19,323 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:05:19,323 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:05:19,324 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:05:19,325 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:05:19,325 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:05:19,325 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:05:19,325 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:05:19,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:05:19,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:05:19,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:05:19,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:05:19,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:05:19,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:05:19,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:05:19,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:05:19,327 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:05:19,327 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:05:19,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:05:19,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:05:19,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:05:19,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:05:19,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:05:19,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:05:19,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:05:19,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:05:19,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:05:19,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:05:19,331 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:05:19,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:05:19,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:05:19,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:05:19,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:05:19,332 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_49d75819-2b49-42c6-9df1-e2648d1e241b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 662534f4746003a6d2cd07cf74c03b390809f7a7 [2020-11-30 02:05:19,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:05:19,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:05:19,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:05:19,608 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:05:19,622 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:05:19,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label42.c [2020-11-30 02:05:19,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/bin/utaipan/data/3aae40ad1/d19de14318dd4191b6b994181db85884/FLAGdb3f60f8a [2020-11-30 02:05:20,291 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:05:20,292 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/sv-benchmarks/c/eca-rers2012/Problem02_label42.c [2020-11-30 02:05:20,315 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/bin/utaipan/data/3aae40ad1/d19de14318dd4191b6b994181db85884/FLAGdb3f60f8a [2020-11-30 02:05:20,573 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/bin/utaipan/data/3aae40ad1/d19de14318dd4191b6b994181db85884 [2020-11-30 02:05:20,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:05:20,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:05:20,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:05:20,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:05:20,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:05:20,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:05:20" (1/1) ... [2020-11-30 02:05:20,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc73498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:20, skipping insertion in model container [2020-11-30 02:05:20,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:05:20" (1/1) ... [2020-11-30 02:05:20,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:05:20,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:05:21,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:05:21,101 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:05:21,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:05:21,266 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:05:21,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21 WrapperNode [2020-11-30 02:05:21,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:05:21,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:05:21,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:05:21,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:05:21,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:05:21,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:05:21,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:05:21,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:05:21,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... [2020-11-30 02:05:21,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:05:21,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:05:21,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:05:21,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:05:21,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:05:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:05:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:05:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:05:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:05:24,250 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:05:24,251 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:05:24,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:05:24 BoogieIcfgContainer [2020-11-30 02:05:24,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:05:24,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:05:24,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:05:24,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:05:24,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:05:20" (1/3) ... [2020-11-30 02:05:24,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bdd5a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:05:24, skipping insertion in model container [2020-11-30 02:05:24,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:21" (2/3) ... [2020-11-30 02:05:24,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bdd5a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:05:24, skipping insertion in model container [2020-11-30 02:05:24,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:05:24" (3/3) ... [2020-11-30 02:05:24,265 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label42.c [2020-11-30 02:05:24,276 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:05:24,281 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:05:24,292 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:05:24,327 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:05:24,327 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:05:24,328 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:05:24,328 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:05:24,328 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:05:24,328 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:05:24,328 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:05:24,329 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:05:24,347 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-30 02:05:24,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-30 02:05:24,357 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:24,358 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] [2020-11-30 02:05:24,358 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:24,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:24,366 INFO L82 PathProgramCache]: Analyzing trace with hash 354696296, now seen corresponding path program 1 times [2020-11-30 02:05:24,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:05:24,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470667372] [2020-11-30 02:05:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:05:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:24,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:24,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470667372] [2020-11-30 02:05:24,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:05:24,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:05:24,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536695659] [2020-11-30 02:05:24,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:05:24,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:05:24,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:05:24,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:05:24,840 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-30 02:05:25,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:25,571 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-30 02:05:25,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:05:25,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-30 02:05:25,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:25,592 INFO L225 Difference]: With dead ends: 251 [2020-11-30 02:05:25,595 INFO L226 Difference]: Without dead ends: 163 [2020-11-30 02:05:25,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:05:25,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-30 02:05:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-30 02:05:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-30 02:05:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-11-30 02:05:25,686 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-11-30 02:05:25,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:25,687 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-11-30 02:05:25,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:05:25,688 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-11-30 02:05:25,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-30 02:05:25,694 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:25,694 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:25,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:05:25,695 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:25,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:25,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1094083995, now seen corresponding path program 1 times [2020-11-30 02:05:25,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:05:25,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396507614] [2020-11-30 02:05:25,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:05:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:26,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396507614] [2020-11-30 02:05:26,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:05:26,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:05:26,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889947638] [2020-11-30 02:05:26,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:05:26,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:05:26,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:05:26,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:05:26,012 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 4 states. [2020-11-30 02:05:26,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:26,833 INFO L93 Difference]: Finished difference Result 563 states and 1044 transitions. [2020-11-30 02:05:26,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:05:26,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-11-30 02:05:26,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:26,838 INFO L225 Difference]: With dead ends: 563 [2020-11-30 02:05:26,838 INFO L226 Difference]: Without dead ends: 323 [2020-11-30 02:05:26,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:05:26,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-30 02:05:26,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-30 02:05:26,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-30 02:05:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 523 transitions. [2020-11-30 02:05:26,864 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 523 transitions. Word has length 84 [2020-11-30 02:05:26,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:26,865 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 523 transitions. [2020-11-30 02:05:26,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:05:26,865 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 523 transitions. [2020-11-30 02:05:26,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-30 02:05:26,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:26,869 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] [2020-11-30 02:05:26,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:05:26,869 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:26,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1873956091, now seen corresponding path program 1 times [2020-11-30 02:05:26,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:05:26,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314798246] [2020-11-30 02:05:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:05:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:26,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314798246] [2020-11-30 02:05:26,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:05:26,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:05:26,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3514644] [2020-11-30 02:05:26,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:05:26,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:05:26,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:05:26,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:05:26,988 INFO L87 Difference]: Start difference. First operand 323 states and 523 transitions. Second operand 3 states. [2020-11-30 02:05:27,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:27,474 INFO L93 Difference]: Finished difference Result 965 states and 1566 transitions. [2020-11-30 02:05:27,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:05:27,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-30 02:05:27,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:27,484 INFO L225 Difference]: With dead ends: 965 [2020-11-30 02:05:27,484 INFO L226 Difference]: Without dead ends: 643 [2020-11-30 02:05:27,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:05:27,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-11-30 02:05:27,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-11-30 02:05:27,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-30 02:05:27,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 878 transitions. [2020-11-30 02:05:27,522 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 878 transitions. Word has length 98 [2020-11-30 02:05:27,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:27,523 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 878 transitions. [2020-11-30 02:05:27,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:05:27,523 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 878 transitions. [2020-11-30 02:05:27,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-30 02:05:27,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:27,528 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] [2020-11-30 02:05:27,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:05:27,528 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:27,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:27,529 INFO L82 PathProgramCache]: Analyzing trace with hash 242413054, now seen corresponding path program 1 times [2020-11-30 02:05:27,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:05:27,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447970639] [2020-11-30 02:05:27,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:05:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:27,594 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:27,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447970639] [2020-11-30 02:05:27,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:05:27,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:05:27,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721652042] [2020-11-30 02:05:27,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:05:27,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:05:27,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:05:27,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:05:27,598 INFO L87 Difference]: Start difference. First operand 643 states and 878 transitions. Second operand 3 states. [2020-11-30 02:05:28,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:28,221 INFO L93 Difference]: Finished difference Result 1605 states and 2276 transitions. [2020-11-30 02:05:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:05:28,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-30 02:05:28,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:28,228 INFO L225 Difference]: With dead ends: 1605 [2020-11-30 02:05:28,228 INFO L226 Difference]: Without dead ends: 963 [2020-11-30 02:05:28,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:05:28,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-11-30 02:05:28,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2020-11-30 02:05:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-11-30 02:05:28,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1359 transitions. [2020-11-30 02:05:28,292 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1359 transitions. Word has length 103 [2020-11-30 02:05:28,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:28,292 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1359 transitions. [2020-11-30 02:05:28,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:05:28,293 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1359 transitions. [2020-11-30 02:05:28,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-30 02:05:28,298 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:28,299 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] [2020-11-30 02:05:28,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:05:28,300 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:28,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:28,303 INFO L82 PathProgramCache]: Analyzing trace with hash 204437320, now seen corresponding path program 1 times [2020-11-30 02:05:28,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:05:28,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716198995] [2020-11-30 02:05:28,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:05:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:28,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716198995] [2020-11-30 02:05:28,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796821085] [2020-11-30 02:05:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:05:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:28,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:05:28,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:05:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 02:05:28,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:05:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 02:05:29,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:05:29,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-30 02:05:29,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116502865] [2020-11-30 02:05:29,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:05:29,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:05:29,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:05:29,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:05:29,030 INFO L87 Difference]: Start difference. First operand 963 states and 1359 transitions. Second operand 3 states. [2020-11-30 02:05:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:29,721 INFO L93 Difference]: Finished difference Result 2245 states and 3222 transitions. [2020-11-30 02:05:29,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:05:29,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-30 02:05:29,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:29,730 INFO L225 Difference]: With dead ends: 2245 [2020-11-30 02:05:29,731 INFO L226 Difference]: Without dead ends: 1283 [2020-11-30 02:05:29,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:05:29,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2020-11-30 02:05:29,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1203. [2020-11-30 02:05:29,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-11-30 02:05:29,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1647 transitions. [2020-11-30 02:05:29,780 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1647 transitions. Word has length 107 [2020-11-30 02:05:29,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:29,781 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1647 transitions. [2020-11-30 02:05:29,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:05:29,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1647 transitions. [2020-11-30 02:05:29,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-30 02:05:29,786 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:29,786 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:30,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:05:30,010 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:30,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:30,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1081458577, now seen corresponding path program 1 times [2020-11-30 02:05:30,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:05:30,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161591299] [2020-11-30 02:05:30,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:05:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 02:05:30,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161591299] [2020-11-30 02:05:30,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:05:30,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:05:30,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720518016] [2020-11-30 02:05:30,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:05:30,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:05:30,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:05:30,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:05:30,146 INFO L87 Difference]: Start difference. First operand 1203 states and 1647 transitions. Second operand 3 states. [2020-11-30 02:05:30,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:30,694 INFO L93 Difference]: Finished difference Result 2805 states and 3868 transitions. [2020-11-30 02:05:30,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:05:30,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-11-30 02:05:30,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:30,701 INFO L225 Difference]: With dead ends: 2805 [2020-11-30 02:05:30,701 INFO L226 Difference]: Without dead ends: 1043 [2020-11-30 02:05:30,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:05:30,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-11-30 02:05:30,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2020-11-30 02:05:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-11-30 02:05:30,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1315 transitions. [2020-11-30 02:05:30,735 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1315 transitions. Word has length 121 [2020-11-30 02:05:30,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:30,736 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1315 transitions. [2020-11-30 02:05:30,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:05:30,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1315 transitions. [2020-11-30 02:05:30,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-30 02:05:30,743 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:30,743 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:30,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:05:30,744 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:30,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:30,749 INFO L82 PathProgramCache]: Analyzing trace with hash -155627389, now seen corresponding path program 1 times [2020-11-30 02:05:30,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:05:30,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761134449] [2020-11-30 02:05:30,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:05:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-11-30 02:05:30,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761134449] [2020-11-30 02:05:30,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:05:30,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:05:30,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008580661] [2020-11-30 02:05:30,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:05:30,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:05:30,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:05:30,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:05:30,832 INFO L87 Difference]: Start difference. First operand 1043 states and 1315 transitions. Second operand 3 states. [2020-11-30 02:05:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:31,316 INFO L93 Difference]: Finished difference Result 2565 states and 3289 transitions. [2020-11-30 02:05:31,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:05:31,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2020-11-30 02:05:31,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:31,325 INFO L225 Difference]: With dead ends: 2565 [2020-11-30 02:05:31,325 INFO L226 Difference]: Without dead ends: 1363 [2020-11-30 02:05:31,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:05:31,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2020-11-30 02:05:31,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1203. [2020-11-30 02:05:31,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-11-30 02:05:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1374 transitions. [2020-11-30 02:05:31,359 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1374 transitions. Word has length 137 [2020-11-30 02:05:31,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:31,359 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1374 transitions. [2020-11-30 02:05:31,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:05:31,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1374 transitions. [2020-11-30 02:05:31,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-11-30 02:05:31,363 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:31,363 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:31,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:05:31,363 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:31,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:31,364 INFO L82 PathProgramCache]: Analyzing trace with hash 907089495, now seen corresponding path program 1 times [2020-11-30 02:05:31,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:05:31,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126775294] [2020-11-30 02:05:31,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:05:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-11-30 02:05:31,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126775294] [2020-11-30 02:05:31,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:05:31,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:05:31,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976824665] [2020-11-30 02:05:31,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:05:31,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:05:31,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:05:31,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:05:31,448 INFO L87 Difference]: Start difference. First operand 1203 states and 1374 transitions. Second operand 3 states. [2020-11-30 02:05:31,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:31,827 INFO L93 Difference]: Finished difference Result 3045 states and 3482 transitions. [2020-11-30 02:05:31,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:05:31,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-11-30 02:05:31,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:31,837 INFO L225 Difference]: With dead ends: 3045 [2020-11-30 02:05:31,837 INFO L226 Difference]: Without dead ends: 1683 [2020-11-30 02:05:31,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:05:31,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2020-11-30 02:05:31,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1443. [2020-11-30 02:05:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-11-30 02:05:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1633 transitions. [2020-11-30 02:05:31,880 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1633 transitions. Word has length 142 [2020-11-30 02:05:31,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:31,881 INFO L481 AbstractCegarLoop]: Abstraction has 1443 states and 1633 transitions. [2020-11-30 02:05:31,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:05:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1633 transitions. [2020-11-30 02:05:31,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-30 02:05:31,884 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:31,884 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:31,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 02:05:31,885 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:31,885 INFO L82 PathProgramCache]: Analyzing trace with hash -2088447024, now seen corresponding path program 1 times [2020-11-30 02:05:31,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:05:31,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373588350] [2020-11-30 02:05:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:05:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 65 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:32,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373588350] [2020-11-30 02:05:32,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849805170] [2020-11-30 02:05:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:05:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:32,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:05:32,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:05:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 02:05:32,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:05:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 02:05:32,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:05:32,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-30 02:05:32,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319966716] [2020-11-30 02:05:32,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:05:32,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:05:32,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:05:32,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:05:32,370 INFO L87 Difference]: Start difference. First operand 1443 states and 1633 transitions. Second operand 3 states. [2020-11-30 02:05:32,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:32,822 INFO L93 Difference]: Finished difference Result 3365 states and 3842 transitions. [2020-11-30 02:05:32,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:05:32,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-11-30 02:05:32,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:32,833 INFO L225 Difference]: With dead ends: 3365 [2020-11-30 02:05:32,833 INFO L226 Difference]: Without dead ends: 1763 [2020-11-30 02:05:32,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:05:32,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2020-11-30 02:05:32,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1283. [2020-11-30 02:05:32,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2020-11-30 02:05:32,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1458 transitions. [2020-11-30 02:05:32,878 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1458 transitions. Word has length 154 [2020-11-30 02:05:32,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:32,882 INFO L481 AbstractCegarLoop]: Abstraction has 1283 states and 1458 transitions. [2020-11-30 02:05:32,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:05:32,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1458 transitions. [2020-11-30 02:05:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-11-30 02:05:32,887 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:32,887 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-11-30 02:05:33,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:05:33,102 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:33,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:33,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1141383871, now seen corresponding path program 1 times [2020-11-30 02:05:33,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:05:33,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458504436] [2020-11-30 02:05:33,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:05:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 190 proven. 96 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 02:05:33,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458504436] [2020-11-30 02:05:33,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203594101] [2020-11-30 02:05:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/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 [2020-11-30 02:05:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:33,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 02:05:33,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:05:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 239 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-30 02:05:33,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:05:33,607 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:05:33,687 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 239 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-30 02:05:33,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1616797448] [2020-11-30 02:05:33,711 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2020-11-30 02:05:33,712 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:05:33,716 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:05:33,722 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:05:33,722 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:05:34,292 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-11-30 02:05:41,831 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-11-30 02:05:41,936 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-11-30 02:05:42,053 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-11-30 02:05:44,010 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-11-30 02:05:44,117 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-11-30 02:05:44,727 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 149 [2020-11-30 02:05:44,939 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-11-30 02:05:45,150 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-11-30 02:05:48,329 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 02:05:48,519 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 02:05:48,754 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 02:05:48,882 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 02:05:49,059 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 02:05:49,184 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 02:05:49,382 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 153 [2020-11-30 02:05:49,543 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 02:05:49,685 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 02:05:49,811 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-30 02:05:54,349 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 21 [2020-11-30 02:05:54,429 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6068 conjuctions. This might take some time... [2020-11-30 02:05:54,707 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 320 conjuctions. [2020-11-30 02:05:54,715 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 21 [2020-11-30 02:05:54,785 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6068 conjuctions. This might take some time... [2020-11-30 02:05:55,033 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 320 conjuctions. [2020-11-30 02:05:55,152 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 21 [2020-11-30 02:05:55,205 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6068 conjuctions. This might take some time... [2020-11-30 02:05:55,534 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 320 conjuctions. [2020-11-30 02:05:58,842 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:05:59,408 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 95 [2020-11-30 02:05:59,759 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-11-30 02:06:00,116 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 97 [2020-11-30 02:06:00,498 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-11-30 02:06:00,865 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2020-11-30 02:06:01,302 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2020-11-30 02:06:01,534 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-30 02:06:01,919 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-11-30 02:06:04,492 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-11-30 02:06:10,016 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:06:10,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:06:10,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2020-11-30 02:06:10,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349575021] [2020-11-30 02:06:10,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:06:10,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:06:10,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:06:10,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-11-30 02:06:10,018 INFO L87 Difference]: Start difference. First operand 1283 states and 1458 transitions. Second operand 8 states. [2020-11-30 02:06:11,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:11,388 INFO L93 Difference]: Finished difference Result 2438 states and 2732 transitions. [2020-11-30 02:06:11,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 02:06:11,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 228 [2020-11-30 02:06:11,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:11,393 INFO L225 Difference]: With dead ends: 2438 [2020-11-30 02:06:11,393 INFO L226 Difference]: Without dead ends: 658 [2020-11-30 02:06:11,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 490 SyntacticMatches, 187 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-11-30 02:06:11,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-11-30 02:06:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 643. [2020-11-30 02:06:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-30 02:06:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 680 transitions. [2020-11-30 02:06:11,412 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 680 transitions. Word has length 228 [2020-11-30 02:06:11,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:11,413 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 680 transitions. [2020-11-30 02:06:11,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:06:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 680 transitions. [2020-11-30 02:06:11,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-11-30 02:06:11,417 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:11,418 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:06:11,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-30 02:06:11,642 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:06:11,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:11,643 INFO L82 PathProgramCache]: Analyzing trace with hash 2135621951, now seen corresponding path program 1 times [2020-11-30 02:06:11,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:06:11,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289178167] [2020-11-30 02:06:11,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:06:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:12,138 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 212 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:06:12,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289178167] [2020-11-30 02:06:12,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850756984] [2020-11-30 02:06:12,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/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 [2020-11-30 02:06:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:12,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 02:06:12,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:06:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 311 proven. 114 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 02:06:12,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:06:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 242 proven. 183 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 02:06:12,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1326813607] [2020-11-30 02:06:12,932 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2020-11-30 02:06:12,933 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:06:12,933 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:06:12,934 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:06:12,934 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:06:19,642 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 147 [2020-11-30 02:06:21,877 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-30 02:06:22,086 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-11-30 02:06:22,379 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-11-30 02:06:22,611 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-11-30 02:06:22,917 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-11-30 02:06:23,150 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-11-30 02:06:23,533 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 169 [2020-11-30 02:06:23,767 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-11-30 02:06:24,016 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-11-30 02:06:24,251 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-11-30 02:06:24,501 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-11-30 02:06:28,395 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-11-30 02:06:28,531 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-11-30 02:06:28,696 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-11-30 02:06:28,821 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-11-30 02:06:29,017 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 148 [2020-11-30 02:06:29,158 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-11-30 02:06:29,290 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-11-30 02:06:29,416 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-11-30 02:06:33,364 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 21 [2020-11-30 02:06:33,437 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6068 conjuctions. This might take some time... [2020-11-30 02:06:33,668 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 320 conjuctions. [2020-11-30 02:06:33,674 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 21 [2020-11-30 02:06:33,726 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6068 conjuctions. This might take some time... [2020-11-30 02:06:33,956 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 320 conjuctions. [2020-11-30 02:06:34,061 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 21 [2020-11-30 02:06:34,109 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6068 conjuctions. This might take some time... [2020-11-30 02:06:34,339 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 320 conjuctions. [2020-11-30 02:06:37,852 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:06:38,325 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 95 [2020-11-30 02:06:38,627 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-11-30 02:06:38,952 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2020-11-30 02:06:39,334 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-11-30 02:06:39,706 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-11-30 02:06:40,139 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 108 [2020-11-30 02:06:40,391 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-30 02:06:40,751 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-11-30 02:06:43,832 WARN L193 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2020-11-30 02:06:54,827 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:06:54,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:06:54,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2020-11-30 02:06:54,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395027511] [2020-11-30 02:06:54,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 02:06:54,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:06:54,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 02:06:54,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2020-11-30 02:06:54,829 INFO L87 Difference]: Start difference. First operand 643 states and 680 transitions. Second operand 15 states. [2020-11-30 02:06:56,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:56,067 INFO L93 Difference]: Finished difference Result 886 states and 934 transitions. [2020-11-30 02:06:56,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:06:56,068 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 278 [2020-11-30 02:06:56,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:56,069 INFO L225 Difference]: With dead ends: 886 [2020-11-30 02:06:56,069 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:06:56,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 588 SyntacticMatches, 229 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3790 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2020-11-30 02:06:56,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:06:56,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:06:56,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:06:56,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:06:56,071 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 278 [2020-11-30 02:06:56,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:56,071 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:06:56,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 02:06:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:06:56,072 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:06:56,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1235,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:06:56,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:06:56,668 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-11-30 02:06:56,992 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-11-30 02:06:56,995 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-30 02:06:56,995 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-30 02:06:56,995 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-30 02:06:56,995 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-30 02:06:56,995 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-30 02:06:56,995 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-30 02:06:56,995 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-30 02:06:56,995 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-30 02:06:56,996 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-30 02:06:56,996 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-30 02:06:56,996 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-30 02:06:56,996 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-30 02:06:56,996 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-30 02:06:56,996 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-30 02:06:56,996 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-30 02:06:56,996 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-30 02:06:56,996 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-30 02:06:56,996 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-30 02:06:56,996 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-30 02:06:56,996 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-30 02:06:56,996 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-30 02:06:56,997 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-30 02:06:56,997 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-30 02:06:56,997 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-30 02:06:56,997 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-30 02:06:56,997 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-30 02:06:56,997 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:06:56,997 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-30 02:06:56,997 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-30 02:06:56,997 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-30 02:06:56,997 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-30 02:06:56,997 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-30 02:06:56,997 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-30 02:06:56,997 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-30 02:06:56,998 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-30 02:06:56,999 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-30 02:06:56,999 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-30 02:06:56,999 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-30 02:06:56,999 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse10 (= ~a11~0 1))) (let ((.cse8 (<= 9 ~a28~0)) (.cse0 (= ~a19~0 1)) (.cse9 (<= ~a28~0 10)) (.cse3 (= ~a25~0 1)) (.cse4 (<= ~a28~0 7)) (.cse7 (<= ~a19~0 0)) (.cse5 (= ~a25~0 0)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a17~0 8)) (.cse6 (not .cse10))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and (<= ~a11~0 0) .cse0 .cse5 .cse1 .cse2 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse6) (and .cse7 .cse5 .cse1 .cse2 .cse4) (and .cse8 .cse0 .cse5 .cse1 .cse2 .cse9) (and .cse0 (<= 10 ~a28~0) .cse1 .cse2 .cse9) (and .cse8 .cse0 .cse1 .cse2 .cse3 .cse9) (and .cse1 .cse2 .cse3 .cse6 (= ~a28~0 10)) (and .cse5 .cse1 .cse2 .cse10 .cse4) (<= ~a17~0 7) (and .cse7 .cse5 .cse1 .cse2 .cse6 (not (= 3 ULTIMATE.start_calculate_output_~input)) (= ~a28~0 8))))) [2020-11-30 02:06:56,999 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-30 02:06:56,999 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-30 02:06:56,999 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-30 02:06:57,000 INFO L274 CegarLoopResult]: For program point L478-1(lines 39 608) no Hoare annotation was computed. [2020-11-30 02:06:57,000 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-30 02:06:57,000 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-30 02:06:57,000 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-30 02:06:57,000 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-30 02:06:57,000 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-30 02:06:57,000 INFO L274 CegarLoopResult]: For program point L481-1(lines 39 608) no Hoare annotation was computed. [2020-11-30 02:06:57,000 INFO L274 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-11-30 02:06:57,000 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:06:57,000 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-30 02:06:57,000 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-30 02:06:57,001 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse10 (= ~a11~0 1))) (let ((.cse8 (<= 9 ~a28~0)) (.cse0 (= ~a19~0 1)) (.cse9 (<= ~a28~0 10)) (.cse3 (= ~a25~0 1)) (.cse4 (<= ~a28~0 7)) (.cse7 (<= ~a19~0 0)) (.cse5 (= ~a25~0 0)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a17~0 8)) (.cse6 (not .cse10))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and (<= ~a11~0 0) .cse0 .cse5 .cse1 .cse2 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse6) (and .cse7 .cse5 .cse1 .cse2 .cse4) (and .cse8 .cse0 .cse5 .cse1 .cse2 .cse9) (and .cse0 (<= 10 ~a28~0) .cse1 .cse2 .cse9) (and .cse8 .cse0 .cse1 .cse2 .cse3 .cse9) (and .cse1 .cse2 .cse3 .cse6 (= ~a28~0 10)) (and .cse5 .cse1 .cse2 .cse10 .cse4) (<= ~a17~0 7) (and .cse7 .cse5 .cse1 .cse2 .cse6 (not (= 3 ULTIMATE.start_calculate_output_~input)) (= ~a28~0 8))))) [2020-11-30 02:06:57,001 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-30 02:06:57,001 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-30 02:06:57,001 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-30 02:06:57,001 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-30 02:06:57,001 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-30 02:06:57,001 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-30 02:06:57,001 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-30 02:06:57,001 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-30 02:06:57,005 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-30 02:06:57,006 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-30 02:06:57,006 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-30 02:06:57,006 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-30 02:06:57,006 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-30 02:06:57,006 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-30 02:06:57,006 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-30 02:06:57,006 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-30 02:06:57,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:06:57 BoogieIcfgContainer [2020-11-30 02:06:57,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:06:57,032 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:06:57,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:06:57,033 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:06:57,033 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:05:24" (3/4) ... [2020-11-30 02:06:57,036 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:06:57,061 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-30 02:06:57,063 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-30 02:06:57,065 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-30 02:06:57,067 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-30 02:06:57,225 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_49d75819-2b49-42c6-9df1-e2648d1e241b/bin/utaipan/witness.graphml [2020-11-30 02:06:57,225 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:06:57,226 INFO L168 Benchmark]: Toolchain (without parser) took 96648.54 ms. Allocated memory was 119.5 MB in the beginning and 778.0 MB in the end (delta: 658.5 MB). Free memory was 87.6 MB in the beginning and 551.3 MB in the end (delta: -463.7 MB). Peak memory consumption was 195.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:57,226 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory was 46.3 MB in the beginning and 46.2 MB in the end (delta: 41.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:06:57,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.72 ms. Allocated memory is still 119.5 MB. Free memory was 87.6 MB in the beginning and 80.4 MB in the end (delta: 7.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:57,227 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.83 ms. Allocated memory is still 119.5 MB. Free memory was 80.4 MB in the beginning and 75.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:57,227 INFO L168 Benchmark]: Boogie Preprocessor took 108.46 ms. Allocated memory is still 119.5 MB. Free memory was 75.3 MB in the beginning and 70.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:57,228 INFO L168 Benchmark]: RCFGBuilder took 2763.70 ms. Allocated memory was 119.5 MB in the beginning and 153.1 MB in the end (delta: 33.6 MB). Free memory was 70.6 MB in the beginning and 97.3 MB in the end (delta: -26.7 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:57,228 INFO L168 Benchmark]: TraceAbstraction took 92775.37 ms. Allocated memory was 153.1 MB in the beginning and 778.0 MB in the end (delta: 625.0 MB). Free memory was 97.3 MB in the beginning and 567.0 MB in the end (delta: -469.8 MB). Peak memory consumption was 155.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:57,229 INFO L168 Benchmark]: Witness Printer took 192.45 ms. Allocated memory is still 778.0 MB. Free memory was 567.0 MB in the beginning and 551.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:57,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory was 46.3 MB in the beginning and 46.2 MB in the end (delta: 41.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 683.72 ms. Allocated memory is still 119.5 MB. Free memory was 87.6 MB in the beginning and 80.4 MB in the end (delta: 7.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 112.83 ms. Allocated memory is still 119.5 MB. Free memory was 80.4 MB in the beginning and 75.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 108.46 ms. Allocated memory is still 119.5 MB. Free memory was 75.3 MB in the beginning and 70.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2763.70 ms. Allocated memory was 119.5 MB in the beginning and 153.1 MB in the end (delta: 33.6 MB). Free memory was 70.6 MB in the beginning and 97.3 MB in the end (delta: -26.7 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 92775.37 ms. Allocated memory was 153.1 MB in the beginning and 778.0 MB in the end (delta: 625.0 MB). Free memory was 97.3 MB in the beginning and 567.0 MB in the end (delta: -469.8 MB). Peak memory consumption was 155.2 MB. Max. memory is 16.1 GB. * Witness Printer took 192.45 ms. Allocated memory is still 778.0 MB. Free memory was 567.0 MB in the beginning and 551.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && a28 <= 7) || (((((a11 <= 0 && a19 == 1) && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 7)) || ((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1))) || ((((a19 <= 0 && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 7)) || (((((9 <= a28 && a19 == 1) && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 10)) || ((((a19 == 1 && 10 <= a28) && a21 == 1) && a17 == 8) && a28 <= 10)) || (((((9 <= a28 && a19 == 1) && a21 == 1) && a17 == 8) && a25 == 1) && a28 <= 10)) || ((((a21 == 1 && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 == 10)) || ((((a25 == 0 && a21 == 1) && a17 == 8) && a11 == 1) && a28 <= 7)) || a17 <= 7) || ((((((a19 <= 0 && a25 == 0) && a21 == 1) && a17 == 8) && !(a11 == 1)) && !(3 == input)) && a28 == 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && a28 <= 7) || (((((a11 <= 0 && a19 == 1) && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 7)) || ((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1))) || ((((a19 <= 0 && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 7)) || (((((9 <= a28 && a19 == 1) && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 10)) || ((((a19 == 1 && 10 <= a28) && a21 == 1) && a17 == 8) && a28 <= 10)) || (((((9 <= a28 && a19 == 1) && a21 == 1) && a17 == 8) && a25 == 1) && a28 <= 10)) || ((((a21 == 1 && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 == 10)) || ((((a25 == 0 && a21 == 1) && a17 == 8) && a11 == 1) && a28 <= 7)) || a17 <= 7) || ((((((a19 <= 0 && a25 == 0) && a21 == 1) && a17 == 8) && !(a11 == 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: 91.9s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 842 SDtfs, 1262 SDslu, 130 SDs, 0 SdLazy, 4532 SolverSat, 742 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2086 GetRequests, 1605 SyntacticMatches, 418 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5702 ImplicationChecksByTransitivity, 29.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1443occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 975 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 67 NumberOfFragments, 367 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1810 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 496 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 2299 NumberOfCodeBlocks, 2299 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 3047 ConstructedInterpolants, 0 QuantifiedInterpolants, 3407201 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1505 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 19 InterpolantComputations, 11 PerfectInterpolantSequences, 2183/2896 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...