./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label41.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label41.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI --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 b174e1814bd9b57d51be1f924645d02065497326 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:32:09,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:09,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:09,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:09,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:09,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:09,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:09,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:09,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:09,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:09,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:09,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:09,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:09,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:09,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:09,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:09,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:09,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:09,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:09,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:09,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:09,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:09,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:09,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:09,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:09,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:09,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:09,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:09,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:09,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:09,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:09,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:09,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:09,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:09,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:09,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:09,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:09,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:09,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:09,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:09,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:09,346 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:32:09,393 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:09,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:09,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:09,396 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:09,396 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:09,396 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:09,396 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:09,396 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:09,400 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:09,400 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:09,402 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:09,402 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:09,402 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:09,402 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:09,403 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:09,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:09,404 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:09,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:09,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:09,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:09,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:32:09,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:09,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:32:09,406 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:09,406 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:09,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:32:09,406 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:09,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:32:09,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:09,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:09,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:09,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:09,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:09,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:32:09,411 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:09,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:09,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:32:09,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:09,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:09,412 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_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b174e1814bd9b57d51be1f924645d02065497326 [2021-10-11 02:32:09,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:09,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:09,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:09,728 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:09,732 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:09,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label41.c [2021-10-11 02:32:09,817 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/data/85ef53fc2/ae4590828e3d42149d84c42752cc245f/FLAG76145513e [2021-10-11 02:32:10,451 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:10,452 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/sv-benchmarks/c/eca-rers2012/Problem01_label41.c [2021-10-11 02:32:10,478 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/data/85ef53fc2/ae4590828e3d42149d84c42752cc245f/FLAG76145513e [2021-10-11 02:32:10,686 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/data/85ef53fc2/ae4590828e3d42149d84c42752cc245f [2021-10-11 02:32:10,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:10,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:10,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:10,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:10,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:10,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:10" (1/1) ... [2021-10-11 02:32:10,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105b8807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:10, skipping insertion in model container [2021-10-11 02:32:10,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:10" (1/1) ... [2021-10-11 02:32:10,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:10,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:11,128 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/sv-benchmarks/c/eca-rers2012/Problem01_label41.c[16127,16140] [2021-10-11 02:32:11,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:11,226 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:11,389 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/sv-benchmarks/c/eca-rers2012/Problem01_label41.c[16127,16140] [2021-10-11 02:32:11,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:11,438 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:11,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:11 WrapperNode [2021-10-11 02:32:11,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:11,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:11,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:11,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:11,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:11" (1/1) ... [2021-10-11 02:32:11,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:11" (1/1) ... [2021-10-11 02:32:11,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:11,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:11,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:11,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:11,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:11" (1/1) ... [2021-10-11 02:32:11,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:11" (1/1) ... [2021-10-11 02:32:11,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:11" (1/1) ... [2021-10-11 02:32:11,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:11" (1/1) ... [2021-10-11 02:32:11,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:11" (1/1) ... [2021-10-11 02:32:11,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:11" (1/1) ... [2021-10-11 02:32:11,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:11" (1/1) ... [2021-10-11 02:32:11,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:11,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:11,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:11,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:11,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:11" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:11,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:32:11,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:32:11,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:11,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:14,012 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:14,013 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:32:14,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:14 BoogieIcfgContainer [2021-10-11 02:32:14,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:14,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:14,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:14,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:14,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:10" (1/3) ... [2021-10-11 02:32:14,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525918ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:14, skipping insertion in model container [2021-10-11 02:32:14,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:11" (2/3) ... [2021-10-11 02:32:14,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525918ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:14, skipping insertion in model container [2021-10-11 02:32:14,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:14" (3/3) ... [2021-10-11 02:32:14,026 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2021-10-11 02:32:14,040 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:14,044 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:32:14,055 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:32:14,080 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:14,080 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:32:14,080 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:14,080 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:14,081 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:14,081 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:14,081 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:14,081 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:14,096 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:32:14,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:32:14,104 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:14,105 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] [2021-10-11 02:32:14,106 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:14,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:14,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1806915928, now seen corresponding path program 1 times [2021-10-11 02:32:14,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:14,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456035606] [2021-10-11 02:32:14,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:14,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456035606] [2021-10-11 02:32:14,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:14,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:14,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876527700] [2021-10-11 02:32:14,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:14,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:14,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:14,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:14,477 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:32:15,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:15,018 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:32:15,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:15,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:32:15,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:15,031 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:32:15,032 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:32:15,035 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 [2021-10-11 02:32:15,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:32:15,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:32:15,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:32:15,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-10-11 02:32:15,082 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-10-11 02:32:15,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:15,083 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-10-11 02:32:15,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:15,083 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-10-11 02:32:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-11 02:32:15,087 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:15,087 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:15,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:32:15,088 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:15,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:15,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1034860421, now seen corresponding path program 1 times [2021-10-11 02:32:15,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:15,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666598297] [2021-10-11 02:32:15,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:15,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:15,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666598297] [2021-10-11 02:32:15,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:15,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:15,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173890248] [2021-10-11 02:32:15,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:15,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:15,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:15,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:15,188 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2021-10-11 02:32:15,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:15,591 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-10-11 02:32:15,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:15,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-10-11 02:32:15,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:15,595 INFO L225 Difference]: With dead ends: 431 [2021-10-11 02:32:15,595 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:32:15,597 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 [2021-10-11 02:32:15,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:32:15,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-11 02:32:15,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:32:15,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2021-10-11 02:32:15,616 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 77 [2021-10-11 02:32:15,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:15,617 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2021-10-11 02:32:15,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:15,617 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2021-10-11 02:32:15,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-11 02:32:15,620 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:15,621 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:15,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:32:15,621 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:15,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:15,622 INFO L82 PathProgramCache]: Analyzing trace with hash 525291478, now seen corresponding path program 1 times [2021-10-11 02:32:15,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:15,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352742591] [2021-10-11 02:32:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:15,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352742591] [2021-10-11 02:32:15,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:15,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:15,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784784149] [2021-10-11 02:32:15,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:15,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:15,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:15,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:15,789 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand 4 states. [2021-10-11 02:32:16,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:16,417 INFO L93 Difference]: Finished difference Result 715 states and 1141 transitions. [2021-10-11 02:32:16,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:16,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2021-10-11 02:32:16,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:16,423 INFO L225 Difference]: With dead ends: 715 [2021-10-11 02:32:16,423 INFO L226 Difference]: Without dead ends: 429 [2021-10-11 02:32:16,427 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 [2021-10-11 02:32:16,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-11 02:32:16,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-10-11 02:32:16,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2021-10-11 02:32:16,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 639 transitions. [2021-10-11 02:32:16,465 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 639 transitions. Word has length 105 [2021-10-11 02:32:16,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:16,466 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 639 transitions. [2021-10-11 02:32:16,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:16,466 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 639 transitions. [2021-10-11 02:32:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-11 02:32:16,478 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:16,478 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:16,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:32:16,479 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:16,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:16,481 INFO L82 PathProgramCache]: Analyzing trace with hash -863069664, now seen corresponding path program 1 times [2021-10-11 02:32:16,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:16,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162533041] [2021-10-11 02:32:16,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:16,601 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:32:16,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162533041] [2021-10-11 02:32:16,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:16,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:16,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589691048] [2021-10-11 02:32:16,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:16,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:16,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:16,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:16,605 INFO L87 Difference]: Start difference. First operand 429 states and 639 transitions. Second operand 3 states. [2021-10-11 02:32:17,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:17,031 INFO L93 Difference]: Finished difference Result 999 states and 1479 transitions. [2021-10-11 02:32:17,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:17,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2021-10-11 02:32:17,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:17,036 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:32:17,036 INFO L226 Difference]: Without dead ends: 571 [2021-10-11 02:32:17,038 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 [2021-10-11 02:32:17,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-11 02:32:17,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 429. [2021-10-11 02:32:17,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2021-10-11 02:32:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 627 transitions. [2021-10-11 02:32:17,063 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 627 transitions. Word has length 109 [2021-10-11 02:32:17,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:17,063 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 627 transitions. [2021-10-11 02:32:17,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 627 transitions. [2021-10-11 02:32:17,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-11 02:32:17,064 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:17,065 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:17,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:32:17,065 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:17,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1821412824, now seen corresponding path program 1 times [2021-10-11 02:32:17,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:17,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776777317] [2021-10-11 02:32:17,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-11 02:32:17,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776777317] [2021-10-11 02:32:17,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:17,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:17,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199388788] [2021-10-11 02:32:17,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:17,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:17,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:17,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:17,191 INFO L87 Difference]: Start difference. First operand 429 states and 627 transitions. Second operand 3 states. [2021-10-11 02:32:17,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:17,635 INFO L93 Difference]: Finished difference Result 1070 states and 1538 transitions. [2021-10-11 02:32:17,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:17,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2021-10-11 02:32:17,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:17,640 INFO L225 Difference]: With dead ends: 1070 [2021-10-11 02:32:17,640 INFO L226 Difference]: Without dead ends: 571 [2021-10-11 02:32:17,641 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 [2021-10-11 02:32:17,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-11 02:32:17,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2021-10-11 02:32:17,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:32:17,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 711 transitions. [2021-10-11 02:32:17,662 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 711 transitions. Word has length 113 [2021-10-11 02:32:17,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:17,663 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 711 transitions. [2021-10-11 02:32:17,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:17,664 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 711 transitions. [2021-10-11 02:32:17,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-11 02:32:17,666 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:17,666 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:17,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:32:17,668 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:17,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:17,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1123305740, now seen corresponding path program 1 times [2021-10-11 02:32:17,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:17,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119994304] [2021-10-11 02:32:17,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-11 02:32:17,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119994304] [2021-10-11 02:32:17,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:17,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:17,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075558361] [2021-10-11 02:32:17,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:17,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:17,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:17,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:17,781 INFO L87 Difference]: Start difference. First operand 571 states and 711 transitions. Second operand 3 states. [2021-10-11 02:32:18,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:18,173 INFO L93 Difference]: Finished difference Result 1496 states and 1860 transitions. [2021-10-11 02:32:18,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:18,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2021-10-11 02:32:18,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:18,183 INFO L225 Difference]: With dead ends: 1496 [2021-10-11 02:32:18,184 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:32:18,185 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 [2021-10-11 02:32:18,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:32:18,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 713. [2021-10-11 02:32:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2021-10-11 02:32:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 889 transitions. [2021-10-11 02:32:18,209 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 889 transitions. Word has length 122 [2021-10-11 02:32:18,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:18,212 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 889 transitions. [2021-10-11 02:32:18,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 889 transitions. [2021-10-11 02:32:18,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-11 02:32:18,217 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:18,217 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:18,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:32:18,218 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:18,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:18,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1134302458, now seen corresponding path program 1 times [2021-10-11 02:32:18,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:18,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982519252] [2021-10-11 02:32:18,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-11 02:32:18,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982519252] [2021-10-11 02:32:18,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:18,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:18,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355030905] [2021-10-11 02:32:18,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:18,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:18,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:18,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:18,352 INFO L87 Difference]: Start difference. First operand 713 states and 889 transitions. Second operand 3 states. [2021-10-11 02:32:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:18,695 INFO L93 Difference]: Finished difference Result 1567 states and 1960 transitions. [2021-10-11 02:32:18,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:18,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2021-10-11 02:32:18,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:18,701 INFO L225 Difference]: With dead ends: 1567 [2021-10-11 02:32:18,701 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:32:18,703 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 [2021-10-11 02:32:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:32:18,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2021-10-11 02:32:18,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2021-10-11 02:32:18,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1056 transitions. [2021-10-11 02:32:18,740 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1056 transitions. Word has length 138 [2021-10-11 02:32:18,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:18,741 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1056 transitions. [2021-10-11 02:32:18,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1056 transitions. [2021-10-11 02:32:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-11 02:32:18,744 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:18,744 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:18,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:32:18,745 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:18,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2113814436, now seen corresponding path program 1 times [2021-10-11 02:32:18,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:18,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321285065] [2021-10-11 02:32:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-10-11 02:32:18,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321285065] [2021-10-11 02:32:18,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:18,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:18,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734804220] [2021-10-11 02:32:18,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:18,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:18,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:18,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:18,867 INFO L87 Difference]: Start difference. First operand 855 states and 1056 transitions. Second operand 4 states. [2021-10-11 02:32:19,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:19,415 INFO L93 Difference]: Finished difference Result 1851 states and 2308 transitions. [2021-10-11 02:32:19,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:19,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2021-10-11 02:32:19,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:19,422 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:32:19,422 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:32:19,423 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 [2021-10-11 02:32:19,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:32:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-10-11 02:32:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:32:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2021-10-11 02:32:19,450 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 154 [2021-10-11 02:32:19,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:19,450 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2021-10-11 02:32:19,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:19,450 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2021-10-11 02:32:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-10-11 02:32:19,454 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:19,454 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:19,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:32:19,455 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:19,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:19,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1461374871, now seen corresponding path program 1 times [2021-10-11 02:32:19,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:19,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173427850] [2021-10-11 02:32:19,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 119 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-11 02:32:19,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173427850] [2021-10-11 02:32:19,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026590229] [2021-10-11 02:32:19,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:19,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:32:19,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-11 02:32:20,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:20,364 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-11 02:32:20,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:32:20,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:32:20,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242898663] [2021-10-11 02:32:20,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:20,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:20,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:20,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:20,366 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2021-10-11 02:32:20,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:20,746 INFO L93 Difference]: Finished difference Result 1993 states and 2459 transitions. [2021-10-11 02:32:20,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:20,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2021-10-11 02:32:20,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:20,756 INFO L225 Difference]: With dead ends: 1993 [2021-10-11 02:32:20,757 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:32:20,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:20,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:32:20,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-10-11 02:32:20,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:32:20,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1099 transitions. [2021-10-11 02:32:20,782 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1099 transitions. Word has length 171 [2021-10-11 02:32:20,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:20,783 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1099 transitions. [2021-10-11 02:32:20,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1099 transitions. [2021-10-11 02:32:20,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-11 02:32:20,786 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:20,787 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:32:21,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-11 02:32:21,010 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:21,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:21,010 INFO L82 PathProgramCache]: Analyzing trace with hash 45889626, now seen corresponding path program 1 times [2021-10-11 02:32:21,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:21,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188685069] [2021-10-11 02:32:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 125 proven. 11 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-11 02:32:21,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188685069] [2021-10-11 02:32:21,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45496896] [2021-10-11 02:32:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:21,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:32:21,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-11 02:32:21,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-11 02:32:21,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:32:21,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:32:21,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416767032] [2021-10-11 02:32:21,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:21,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:21,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:21,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:21,744 INFO L87 Difference]: Start difference. First operand 926 states and 1099 transitions. Second operand 3 states. [2021-10-11 02:32:22,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:22,118 INFO L93 Difference]: Finished difference Result 2135 states and 2557 transitions. [2021-10-11 02:32:22,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:22,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2021-10-11 02:32:22,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:22,126 INFO L225 Difference]: With dead ends: 2135 [2021-10-11 02:32:22,126 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:32:22,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 352 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:22,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:32:22,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2021-10-11 02:32:22,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:32:22,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1276 transitions. [2021-10-11 02:32:22,157 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1276 transitions. Word has length 177 [2021-10-11 02:32:22,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:22,157 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1276 transitions. [2021-10-11 02:32:22,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:22,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1276 transitions. [2021-10-11 02:32:22,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-10-11 02:32:22,161 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:22,161 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2021-10-11 02:32:22,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:32:22,377 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:22,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:22,378 INFO L82 PathProgramCache]: Analyzing trace with hash 165805734, now seen corresponding path program 1 times [2021-10-11 02:32:22,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:22,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21828275] [2021-10-11 02:32:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 160 proven. 11 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-10-11 02:32:22,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21828275] [2021-10-11 02:32:22,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126632342] [2021-10-11 02:32:22,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:22,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:32:22,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-11 02:32:22,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-11 02:32:23,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:32:23,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:32:23,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480562061] [2021-10-11 02:32:23,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:23,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:23,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:23,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:23,234 INFO L87 Difference]: Start difference. First operand 1068 states and 1276 transitions. Second operand 3 states. [2021-10-11 02:32:23,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:23,666 INFO L93 Difference]: Finished difference Result 2632 states and 3129 transitions. [2021-10-11 02:32:23,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:23,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2021-10-11 02:32:23,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:23,677 INFO L225 Difference]: With dead ends: 2632 [2021-10-11 02:32:23,677 INFO L226 Difference]: Without dead ends: 1565 [2021-10-11 02:32:23,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 394 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:23,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2021-10-11 02:32:23,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1494. [2021-10-11 02:32:23,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2021-10-11 02:32:23,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1753 transitions. [2021-10-11 02:32:23,726 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1753 transitions. Word has length 198 [2021-10-11 02:32:23,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:23,727 INFO L481 AbstractCegarLoop]: Abstraction has 1494 states and 1753 transitions. [2021-10-11 02:32:23,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:23,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1753 transitions. [2021-10-11 02:32:23,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-10-11 02:32:23,733 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:23,733 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:23,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-11 02:32:23,950 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:23,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:23,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1798710024, now seen corresponding path program 1 times [2021-10-11 02:32:23,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:23,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140947373] [2021-10-11 02:32:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 181 proven. 46 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:32:24,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140947373] [2021-10-11 02:32:24,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594911418] [2021-10-11 02:32:24,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:24,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:32:24,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:24,665 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-11 02:32:24,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:24,820 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-11 02:32:24,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:32:24,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:32:24,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261625947] [2021-10-11 02:32:24,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:24,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:24,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:24,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:32:24,823 INFO L87 Difference]: Start difference. First operand 1494 states and 1753 transitions. Second operand 3 states. [2021-10-11 02:32:25,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:25,127 INFO L93 Difference]: Finished difference Result 3271 states and 3842 transitions. [2021-10-11 02:32:25,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:25,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2021-10-11 02:32:25,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:25,139 INFO L225 Difference]: With dead ends: 3271 [2021-10-11 02:32:25,139 INFO L226 Difference]: Without dead ends: 1778 [2021-10-11 02:32:25,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 431 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:32:25,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2021-10-11 02:32:25,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1494. [2021-10-11 02:32:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2021-10-11 02:32:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1753 transitions. [2021-10-11 02:32:25,183 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1753 transitions. Word has length 217 [2021-10-11 02:32:25,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:25,183 INFO L481 AbstractCegarLoop]: Abstraction has 1494 states and 1753 transitions. [2021-10-11 02:32:25,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:25,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1753 transitions. [2021-10-11 02:32:25,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-10-11 02:32:25,189 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:25,189 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:25,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:25,417 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:25,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:25,418 INFO L82 PathProgramCache]: Analyzing trace with hash -626119630, now seen corresponding path program 1 times [2021-10-11 02:32:25,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:25,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374978198] [2021-10-11 02:32:25,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 197 proven. 11 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-11 02:32:25,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374978198] [2021-10-11 02:32:25,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884313230] [2021-10-11 02:32:25,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:25,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:32:25,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-10-11 02:32:25,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:26,294 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-10-11 02:32:26,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:32:26,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:32:26,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437045220] [2021-10-11 02:32:26,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:26,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:26,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:26,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:26,297 INFO L87 Difference]: Start difference. First operand 1494 states and 1753 transitions. Second operand 4 states. [2021-10-11 02:32:26,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:26,858 INFO L93 Difference]: Finished difference Result 2843 states and 3306 transitions. [2021-10-11 02:32:26,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:26,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2021-10-11 02:32:26,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:26,860 INFO L225 Difference]: With dead ends: 2843 [2021-10-11 02:32:26,860 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:32:26,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:26,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:32:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:32:26,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:32:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:32:26,864 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 229 [2021-10-11 02:32:26,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:26,864 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:32:26,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:26,865 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:32:26,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:32:27,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-11 02:32:27,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:32:27,402 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2021-10-11 02:32:27,617 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2021-10-11 02:32:27,620 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:32:27,620 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:32:27,621 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:32:27,621 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:32:27,621 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:32:27,621 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:32:27,621 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:32:27,621 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:32:27,621 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:32:27,622 INFO L262 CegarLoopResult]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:32:27,622 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:32:27,622 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:32:27,622 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:32:27,623 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:32:27,623 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:32:27,623 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:32:27,623 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:32:27,623 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:32:27,623 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:32:27,623 INFO L262 CegarLoopResult]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:32:27,624 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:32:27,624 INFO L262 CegarLoopResult]: For program point L441(line 441) no Hoare annotation was computed. [2021-10-11 02:32:27,624 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:32:27,624 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:32:27,625 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:32:27,626 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:32:27,627 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:32:27,627 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:32:27,627 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:32:27,627 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:32:27,627 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:32:27,627 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:32:27,627 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:32:27,628 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:32:27,628 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:32:27,628 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:32:27,628 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:32:27,628 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:32:27,628 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:32:27,628 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:32:27,629 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:32:27,629 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:32:27,630 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:32:27,630 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1))) (let ((.cse1 (<= ~a21~0 0)) (.cse8 (<= ~a7~0 0)) (.cse6 (<= ~a16~0 4)) (.cse2 (= ~a17~0 1)) (.cse5 (<= 15 ~a8~0)) (.cse4 (= ~a21~0 1)) (.cse0 (<= ~a16~0 5)) (.cse7 (<= ~a17~0 0)) (.cse9 (not .cse3))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse1 .cse2) (and .cse4 .cse5 .cse2) (and .cse4 .cse6 .cse7 .cse8) (and .cse7 .cse3 .cse1) (and .cse4 .cse8 .cse3 .cse2) (and .cse6 .cse3 .cse2) (and .cse7 .cse9 .cse5) (and (<= 14 ~a8~0) .cse4 .cse7 .cse3) (and .cse0 .cse7 .cse9)))) [2021-10-11 02:32:27,630 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:32:27,630 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:32:27,630 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:32:27,631 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:32:27,631 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:32:27,631 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:32:27,631 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:32:27,631 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:32:27,631 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:32:27,631 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:32:27,631 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:32:27,632 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:32:27,632 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:32:27,632 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:32:27,632 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:32:27,632 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:32:27,632 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:32:27,632 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:32:27,632 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:32:27,633 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:32:27,633 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:32:27,633 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:32:27,633 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:32:27,633 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1))) (let ((.cse1 (<= ~a21~0 0)) (.cse8 (<= ~a7~0 0)) (.cse6 (<= ~a16~0 4)) (.cse2 (= ~a17~0 1)) (.cse5 (<= 15 ~a8~0)) (.cse4 (= ~a21~0 1)) (.cse0 (<= ~a16~0 5)) (.cse7 (<= ~a17~0 0)) (.cse9 (not .cse3))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse1 .cse2) (and .cse4 .cse5 .cse2) (and .cse4 .cse6 .cse7 .cse8) (and .cse7 .cse3 .cse1) (and .cse4 .cse8 .cse3 .cse2) (and .cse6 .cse3 .cse2) (and .cse7 .cse9 .cse5) (and (<= 14 ~a8~0) .cse4 .cse7 .cse3) (and .cse0 .cse7 .cse9)))) [2021-10-11 02:32:27,633 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:32:27,634 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 441) no Hoare annotation was computed. [2021-10-11 02:32:27,634 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:32:27,634 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:32:27,634 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:32:27,635 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:32:27,635 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:32:27,635 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:32:27,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:27 BoogieIcfgContainer [2021-10-11 02:32:27,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:27,683 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:27,683 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:27,683 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:27,684 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:14" (3/4) ... [2021-10-11 02:32:27,687 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:32:27,727 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2021-10-11 02:32:27,731 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:32:27,733 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 02:32:27,734 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:32:27,907 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6736b4-65ff-47ac-9ac2-092ea0d11cb8/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:32:27,907 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:27,909 INFO L168 Benchmark]: Toolchain (without parser) took 17217.50 ms. Allocated memory was 83.9 MB in the beginning and 429.9 MB in the end (delta: 346.0 MB). Free memory was 49.1 MB in the beginning and 204.7 MB in the end (delta: -155.7 MB). Peak memory consumption was 188.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:27,910 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 83.9 MB. Free memory was 64.0 MB in the beginning and 64.0 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:27,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.68 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 48.8 MB in the beginning and 64.5 MB in the end (delta: -15.6 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:27,911 INFO L168 Benchmark]: Boogie Procedure Inliner took 134.88 ms. Allocated memory is still 104.9 MB. Free memory was 64.5 MB in the beginning and 58.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:27,911 INFO L168 Benchmark]: Boogie Preprocessor took 70.41 ms. Allocated memory is still 104.9 MB. Free memory was 58.7 MB in the beginning and 54.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:27,911 INFO L168 Benchmark]: RCFGBuilder took 2370.06 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 54.0 MB in the beginning and 101.4 MB in the end (delta: -47.4 MB). Peak memory consumption was 41.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:27,912 INFO L168 Benchmark]: TraceAbstraction took 13662.64 ms. Allocated memory was 138.4 MB in the beginning and 429.9 MB in the end (delta: 291.5 MB). Free memory was 101.4 MB in the beginning and 220.5 MB in the end (delta: -119.1 MB). Peak memory consumption was 172.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:27,912 INFO L168 Benchmark]: Witness Printer took 225.04 ms. Allocated memory is still 429.9 MB. Free memory was 220.5 MB in the beginning and 204.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:27,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 83.9 MB. Free memory was 64.0 MB in the beginning and 64.0 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 736.68 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 48.8 MB in the beginning and 64.5 MB in the end (delta: -15.6 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 134.88 ms. Allocated memory is still 104.9 MB. Free memory was 64.5 MB in the beginning and 58.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.41 ms. Allocated memory is still 104.9 MB. Free memory was 58.7 MB in the beginning and 54.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2370.06 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 54.0 MB in the beginning and 101.4 MB in the end (delta: -47.4 MB). Peak memory consumption was 41.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13662.64 ms. Allocated memory was 138.4 MB in the beginning and 429.9 MB in the end (delta: 291.5 MB). Free memory was 101.4 MB in the beginning and 220.5 MB in the end (delta: -119.1 MB). Peak memory consumption was 172.4 MB. Max. memory is 16.1 GB. * Witness Printer took 225.04 ms. Allocated memory is still 429.9 MB. Free memory was 220.5 MB in the beginning and 204.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 441]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((a16 <= 5 && a21 <= 0) && a17 == 1) || ((a20 == 1 && a21 <= 0) && a17 == 1)) || ((a21 == 1 && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a16 <= 4) && a17 <= 0) && a7 <= 0)) || ((a17 <= 0 && a20 == 1) && a21 <= 0)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a17 <= 0 && !(a20 == 1)) && 15 <= a8)) || (((14 <= a8 && a21 == 1) && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 <= 0) && !(a20 == 1)) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((a16 <= 5 && a21 <= 0) && a17 == 1) || ((a20 == 1 && a21 <= 0) && a17 == 1)) || ((a21 == 1 && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a16 <= 4) && a17 <= 0) && a7 <= 0)) || ((a17 <= 0 && a20 == 1) && a21 <= 0)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a17 <= 0 && !(a20 == 1)) && 15 <= a8)) || (((14 <= a8 && a21 == 1) && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 <= 0) && !(a20 == 1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.0s, OverallIterations: 13, TraceHistogramMax: 7, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 544 SDtfs, 924 SDslu, 60 SDs, 0 SdLazy, 2965 SolverSat, 660 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2014 GetRequests, 1982 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1494occurred in iteration=11, 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, 13 MinimizatonAttempts, 923 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 225 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1392 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 188 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 2873 NumberOfCodeBlocks, 2873 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3842 ConstructedInterpolants, 0 QuantifiedInterpolants, 1667231 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2166 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 23 InterpolantComputations, 18 PerfectInterpolantSequences, 4098/4188 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...