./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label45.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label45.c -s /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d4861c19654d56144743310eef6a7eb4ce70026 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 14:21:58,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:21:58,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:21:58,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:21:58,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:21:58,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:21:58,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:21:58,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:21:58,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:21:58,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:21:58,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:21:58,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:21:58,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:21:58,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:21:58,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:21:58,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:21:58,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:21:58,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:21:58,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:21:58,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:21:58,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:21:58,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:21:58,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:21:58,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:21:58,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:21:58,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:21:58,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:21:58,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:21:58,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:21:58,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:21:58,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:21:58,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:21:58,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:21:58,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:21:58,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:21:58,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:21:58,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:21:58,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:21:58,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:21:58,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:21:58,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:21:58,954 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 14:21:58,977 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:21:58,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:21:58,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:21:58,978 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:21:58,979 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:21:58,979 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:21:58,979 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 14:21:58,979 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:21:58,979 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:21:58,979 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 14:21:58,980 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 14:21:58,980 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:21:58,980 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 14:21:58,980 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 14:21:58,980 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 14:21:58,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:21:58,981 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:21:58,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:21:58,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:21:58,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:21:58,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 14:21:58,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:21:58,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 14:21:58,982 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:21:58,983 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:21:58,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 14:21:58,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:21:58,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 14:21:58,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:21:58,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:21:58,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:21:58,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:21:58,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:21:58,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 14:21:58,984 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 14:21:58,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 14:21:58,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 14:21:58,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:21:58,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:21:58,985 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d4861c19654d56144743310eef6a7eb4ce70026 [2020-12-09 14:21:59,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:21:59,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:21:59,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:21:59,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:21:59,190 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:21:59,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label45.c [2020-12-09 14:21:59,234 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/data/26ae3dfc6/e8a43a896d6246e8a37411c9638ea93b/FLAGa0cd80ea7 [2020-12-09 14:21:59,687 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:21:59,688 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/sv-benchmarks/c/eca-rers2012/Problem01_label45.c [2020-12-09 14:21:59,697 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/data/26ae3dfc6/e8a43a896d6246e8a37411c9638ea93b/FLAGa0cd80ea7 [2020-12-09 14:21:59,709 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/data/26ae3dfc6/e8a43a896d6246e8a37411c9638ea93b [2020-12-09 14:21:59,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:21:59,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:21:59,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:21:59,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:21:59,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:21:59,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:21:59" (1/1) ... [2020-12-09 14:21:59,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e6fba91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:21:59, skipping insertion in model container [2020-12-09 14:21:59,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:21:59" (1/1) ... [2020-12-09 14:21:59,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:21:59,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:21:59,987 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/sv-benchmarks/c/eca-rers2012/Problem01_label45.c[20099,20112] [2020-12-09 14:22:00,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:22:00,009 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 14:22:00,071 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/sv-benchmarks/c/eca-rers2012/Problem01_label45.c[20099,20112] [2020-12-09 14:22:00,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:22:00,088 INFO L208 MainTranslator]: Completed translation [2020-12-09 14:22:00,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:22:00 WrapperNode [2020-12-09 14:22:00,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:22:00,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 14:22:00,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 14:22:00,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 14:22:00,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:22:00" (1/1) ... [2020-12-09 14:22:00,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:22:00" (1/1) ... [2020-12-09 14:22:00,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 14:22:00,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 14:22:00,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 14:22:00,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 14:22:00,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:22:00" (1/1) ... [2020-12-09 14:22:00,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:22:00" (1/1) ... [2020-12-09 14:22:00,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:22:00" (1/1) ... [2020-12-09 14:22:00,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:22:00" (1/1) ... [2020-12-09 14:22:00,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:22:00" (1/1) ... [2020-12-09 14:22:00,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:22:00" (1/1) ... [2020-12-09 14:22:00,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:22:00" (1/1) ... [2020-12-09 14:22:00,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 14:22:00,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 14:22:00,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 14:22:00,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 14:22:00,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:22:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:22:00,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 14:22:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 14:22:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 14:22:00,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 14:22:01,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 14:22:01,526 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 14:22:01,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:22:01 BoogieIcfgContainer [2020-12-09 14:22:01,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 14:22:01,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 14:22:01,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 14:22:01,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 14:22:01,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:21:59" (1/3) ... [2020-12-09 14:22:01,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca3ccc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:22:01, skipping insertion in model container [2020-12-09 14:22:01,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:22:00" (2/3) ... [2020-12-09 14:22:01,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca3ccc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:22:01, skipping insertion in model container [2020-12-09 14:22:01,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:22:01" (3/3) ... [2020-12-09 14:22:01,534 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label45.c [2020-12-09 14:22:01,544 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 14:22:01,546 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 14:22:01,554 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 14:22:01,571 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 14:22:01,571 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 14:22:01,571 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 14:22:01,572 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 14:22:01,572 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 14:22:01,572 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 14:22:01,572 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 14:22:01,572 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 14:22:01,582 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 14:22:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 14:22:01,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:22:01,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:22:01,589 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:22:01,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:22:01,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1323232409, now seen corresponding path program 1 times [2020-12-09 14:22:01,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:22:01,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005691853] [2020-12-09 14:22:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:22:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:22:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:22:01,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005691853] [2020-12-09 14:22:01,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:22:01,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:22:01,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673370880] [2020-12-09 14:22:01,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:22:01,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:22:01,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:22:01,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:22:01,844 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-12-09 14:22:02,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:22:02,141 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-12-09 14:22:02,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:22:02,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-09 14:22:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:22:02,151 INFO L225 Difference]: With dead ends: 224 [2020-12-09 14:22:02,151 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 14:22:02,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:22:02,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 14:22:02,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-09 14:22:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 14:22:02,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-12-09 14:22:02,191 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-12-09 14:22:02,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:22:02,192 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-12-09 14:22:02,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:22:02,192 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-12-09 14:22:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-09 14:22:02,195 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:22:02,195 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-12-09 14:22:02,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 14:22:02,196 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:22:02,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:22:02,196 INFO L82 PathProgramCache]: Analyzing trace with hash 585785311, now seen corresponding path program 1 times [2020-12-09 14:22:02,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:22:02,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839161904] [2020-12-09 14:22:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:22:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:22:02,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:22:02,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839161904] [2020-12-09 14:22:02,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:22:02,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:22:02,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845096912] [2020-12-09 14:22:02,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:22:02,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:22:02,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:22:02,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:22:02,255 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-12-09 14:22:02,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:22:02,503 INFO L93 Difference]: Finished difference Result 433 states and 775 transitions. [2020-12-09 14:22:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:22:02,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-09 14:22:02,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:22:02,506 INFO L225 Difference]: With dead ends: 433 [2020-12-09 14:22:02,506 INFO L226 Difference]: Without dead ends: 289 [2020-12-09 14:22:02,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:22:02,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-12-09 14:22:02,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2020-12-09 14:22:02,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 14:22:02,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 480 transitions. [2020-12-09 14:22:02,526 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 480 transitions. Word has length 76 [2020-12-09 14:22:02,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:22:02,527 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 480 transitions. [2020-12-09 14:22:02,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:22:02,527 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 480 transitions. [2020-12-09 14:22:02,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 14:22:02,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:22:02,529 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:22:02,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 14:22:02,529 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:22:02,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:22:02,530 INFO L82 PathProgramCache]: Analyzing trace with hash 919997269, now seen corresponding path program 1 times [2020-12-09 14:22:02,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:22:02,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046103207] [2020-12-09 14:22:02,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:22:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:22:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:22:02,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046103207] [2020-12-09 14:22:02,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:22:02,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:22:02,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046626738] [2020-12-09 14:22:02,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:22:02,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:22:02,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:22:02,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:22:02,575 INFO L87 Difference]: Start difference. First operand 287 states and 480 transitions. Second operand 3 states. [2020-12-09 14:22:02,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:22:02,816 INFO L93 Difference]: Finished difference Result 857 states and 1437 transitions. [2020-12-09 14:22:02,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:22:02,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 14:22:02,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:22:02,820 INFO L225 Difference]: With dead ends: 857 [2020-12-09 14:22:02,820 INFO L226 Difference]: Without dead ends: 571 [2020-12-09 14:22:02,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:22:02,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-12-09 14:22:02,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-12-09 14:22:02,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 14:22:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 884 transitions. [2020-12-09 14:22:02,846 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 884 transitions. Word has length 80 [2020-12-09 14:22:02,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:22:02,846 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 884 transitions. [2020-12-09 14:22:02,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:22:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 884 transitions. [2020-12-09 14:22:02,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-09 14:22:02,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:22:02,851 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-12-09 14:22:02,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 14:22:02,851 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:22:02,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:22:02,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1341157260, now seen corresponding path program 1 times [2020-12-09 14:22:02,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:22:02,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378685596] [2020-12-09 14:22:02,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:22:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:22:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:22:02,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378685596] [2020-12-09 14:22:02,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:22:02,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:22:02,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635537937] [2020-12-09 14:22:02,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:22:02,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:22:02,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:22:02,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:22:02,917 INFO L87 Difference]: Start difference. First operand 571 states and 884 transitions. Second operand 4 states. [2020-12-09 14:22:03,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:22:03,303 INFO L93 Difference]: Finished difference Result 1425 states and 2183 transitions. [2020-12-09 14:22:03,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:22:03,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-09 14:22:03,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:22:03,307 INFO L225 Difference]: With dead ends: 1425 [2020-12-09 14:22:03,307 INFO L226 Difference]: Without dead ends: 855 [2020-12-09 14:22:03,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:22:03,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-12-09 14:22:03,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2020-12-09 14:22:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-12-09 14:22:03,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1056 transitions. [2020-12-09 14:22:03,322 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1056 transitions. Word has length 83 [2020-12-09 14:22:03,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:22:03,323 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1056 transitions. [2020-12-09 14:22:03,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:22:03,323 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1056 transitions. [2020-12-09 14:22:03,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-09 14:22:03,324 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:22:03,324 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:22:03,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 14:22:03,325 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:22:03,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:22:03,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1330250781, now seen corresponding path program 1 times [2020-12-09 14:22:03,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:22:03,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114267386] [2020-12-09 14:22:03,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:22:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:22:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:22:03,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114267386] [2020-12-09 14:22:03,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:22:03,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:22:03,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195880595] [2020-12-09 14:22:03,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:22:03,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:22:03,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:22:03,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:22:03,365 INFO L87 Difference]: Start difference. First operand 713 states and 1056 transitions. Second operand 3 states. [2020-12-09 14:22:03,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:22:03,626 INFO L93 Difference]: Finished difference Result 1922 states and 2886 transitions. [2020-12-09 14:22:03,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:22:03,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-09 14:22:03,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:22:03,634 INFO L225 Difference]: With dead ends: 1922 [2020-12-09 14:22:03,634 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 14:22:03,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:22:03,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 14:22:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 997. [2020-12-09 14:22:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-12-09 14:22:03,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1510 transitions. [2020-12-09 14:22:03,659 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1510 transitions. Word has length 84 [2020-12-09 14:22:03,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:22:03,659 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1510 transitions. [2020-12-09 14:22:03,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:22:03,659 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1510 transitions. [2020-12-09 14:22:03,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-09 14:22:03,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:22:03,661 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:22:03,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 14:22:03,661 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:22:03,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:22:03,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1554339286, now seen corresponding path program 1 times [2020-12-09 14:22:03,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:22:03,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914121062] [2020-12-09 14:22:03,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:22:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:22:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 14:22:03,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914121062] [2020-12-09 14:22:03,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:22:03,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:22:03,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310471913] [2020-12-09 14:22:03,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:22:03,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:22:03,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:22:03,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:22:03,699 INFO L87 Difference]: Start difference. First operand 997 states and 1510 transitions. Second operand 3 states. [2020-12-09 14:22:03,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:22:03,993 INFO L93 Difference]: Finished difference Result 2206 states and 3304 transitions. [2020-12-09 14:22:03,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:22:03,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-09 14:22:03,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:22:04,001 INFO L225 Difference]: With dead ends: 2206 [2020-12-09 14:22:04,001 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 14:22:04,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:22:04,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 14:22:04,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2020-12-09 14:22:04,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-12-09 14:22:04,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1741 transitions. [2020-12-09 14:22:04,038 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1741 transitions. Word has length 87 [2020-12-09 14:22:04,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:22:04,039 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1741 transitions. [2020-12-09 14:22:04,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:22:04,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1741 transitions. [2020-12-09 14:22:04,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 14:22:04,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:22:04,041 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:22:04,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 14:22:04,042 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:22:04,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:22:04,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1204458482, now seen corresponding path program 1 times [2020-12-09 14:22:04,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:22:04,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81382795] [2020-12-09 14:22:04,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:22:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:22:04,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 14:22:04,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81382795] [2020-12-09 14:22:04,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:22:04,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:22:04,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989444119] [2020-12-09 14:22:04,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:22:04,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:22:04,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:22:04,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:22:04,086 INFO L87 Difference]: Start difference. First operand 1210 states and 1741 transitions. Second operand 4 states. [2020-12-09 14:22:04,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:22:04,459 INFO L93 Difference]: Finished difference Result 2490 states and 3570 transitions. [2020-12-09 14:22:04,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:22:04,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-12-09 14:22:04,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:22:04,465 INFO L225 Difference]: With dead ends: 2490 [2020-12-09 14:22:04,465 INFO L226 Difference]: Without dead ends: 1281 [2020-12-09 14:22:04,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:22:04,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-12-09 14:22:04,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1139. [2020-12-09 14:22:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 14:22:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1598 transitions. [2020-12-09 14:22:04,491 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1598 transitions. Word has length 91 [2020-12-09 14:22:04,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:22:04,491 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1598 transitions. [2020-12-09 14:22:04,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:22:04,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1598 transitions. [2020-12-09 14:22:04,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-09 14:22:04,495 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:22:04,495 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:22:04,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 14:22:04,495 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:22:04,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:22:04,496 INFO L82 PathProgramCache]: Analyzing trace with hash 397481123, now seen corresponding path program 1 times [2020-12-09 14:22:04,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:22:04,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596333739] [2020-12-09 14:22:04,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:22:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:22:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:22:04,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596333739] [2020-12-09 14:22:04,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:22:04,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:22:04,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297821864] [2020-12-09 14:22:04,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:22:04,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:22:04,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:22:04,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:22:04,556 INFO L87 Difference]: Start difference. First operand 1139 states and 1598 transitions. Second operand 3 states. [2020-12-09 14:22:04,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:22:04,795 INFO L93 Difference]: Finished difference Result 2490 states and 3438 transitions. [2020-12-09 14:22:04,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:22:04,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-09 14:22:04,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:22:04,800 INFO L225 Difference]: With dead ends: 2490 [2020-12-09 14:22:04,800 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 14:22:04,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:22:04,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 14:22:04,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2020-12-09 14:22:04,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-12-09 14:22:04,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1495 transitions. [2020-12-09 14:22:04,820 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1495 transitions. Word has length 100 [2020-12-09 14:22:04,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:22:04,820 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1495 transitions. [2020-12-09 14:22:04,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:22:04,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1495 transitions. [2020-12-09 14:22:04,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-09 14:22:04,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:22:04,821 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:22:04,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 14:22:04,822 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:22:04,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:22:04,822 INFO L82 PathProgramCache]: Analyzing trace with hash 2113460587, now seen corresponding path program 1 times [2020-12-09 14:22:04,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:22:04,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564445823] [2020-12-09 14:22:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:22:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:22:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:22:04,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564445823] [2020-12-09 14:22:04,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440336828] [2020-12-09 14:22:04,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:22:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:22:04,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 14:22:04,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:22:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 14:22:05,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:22:05,139 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 14:22:05,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 14:22:05,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 14:22:05,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757915722] [2020-12-09 14:22:05,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:22:05,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:22:05,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:22:05,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:22:05,141 INFO L87 Difference]: Start difference. First operand 1210 states and 1495 transitions. Second operand 3 states. [2020-12-09 14:22:05,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:22:05,394 INFO L93 Difference]: Finished difference Result 2774 states and 3461 transitions. [2020-12-09 14:22:05,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:22:05,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-12-09 14:22:05,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:22:05,403 INFO L225 Difference]: With dead ends: 2774 [2020-12-09 14:22:05,403 INFO L226 Difference]: Without dead ends: 1565 [2020-12-09 14:22:05,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:22:05,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-12-09 14:22:05,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2020-12-09 14:22:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-12-09 14:22:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1920 transitions. [2020-12-09 14:22:05,435 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1920 transitions. Word has length 104 [2020-12-09 14:22:05,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:22:05,435 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1920 transitions. [2020-12-09 14:22:05,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:22:05,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1920 transitions. [2020-12-09 14:22:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-09 14:22:05,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:22:05,438 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:22:05,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-09 14:22:05,639 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:22:05,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:22:05,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1071158234, now seen corresponding path program 1 times [2020-12-09 14:22:05,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:22:05,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827144349] [2020-12-09 14:22:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:22:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:22:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-09 14:22:05,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827144349] [2020-12-09 14:22:05,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939902353] [2020-12-09 14:22:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:22:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:22:05,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 14:22:05,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:22:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-09 14:22:05,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:22:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-09 14:22:06,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 14:22:06,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 14:22:06,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994408751] [2020-12-09 14:22:06,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:22:06,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:22:06,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:22:06,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:22:06,051 INFO L87 Difference]: Start difference. First operand 1565 states and 1920 transitions. Second operand 3 states. [2020-12-09 14:22:06,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:22:06,314 INFO L93 Difference]: Finished difference Result 3342 states and 4071 transitions. [2020-12-09 14:22:06,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:22:06,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2020-12-09 14:22:06,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:22:06,321 INFO L225 Difference]: With dead ends: 3342 [2020-12-09 14:22:06,321 INFO L226 Difference]: Without dead ends: 1778 [2020-12-09 14:22:06,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:22:06,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-12-09 14:22:06,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1707. [2020-12-09 14:22:06,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1707 states. [2020-12-09 14:22:06,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2025 transitions. [2020-12-09 14:22:06,351 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2025 transitions. Word has length 120 [2020-12-09 14:22:06,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:22:06,352 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2025 transitions. [2020-12-09 14:22:06,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:22:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2025 transitions. [2020-12-09 14:22:06,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-09 14:22:06,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:22:06,355 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:22:06,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 14:22:06,556 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:22:06,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:22:06,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1361892018, now seen corresponding path program 1 times [2020-12-09 14:22:06,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:22:06,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928999501] [2020-12-09 14:22:06,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:22:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:22:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-12-09 14:22:06,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928999501] [2020-12-09 14:22:06,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:22:06,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:22:06,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172131501] [2020-12-09 14:22:06,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:22:06,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:22:06,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:22:06,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:22:06,752 INFO L87 Difference]: Start difference. First operand 1707 states and 2025 transitions. Second operand 3 states. [2020-12-09 14:22:06,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:22:06,978 INFO L93 Difference]: Finished difference Result 3910 states and 4672 transitions. [2020-12-09 14:22:06,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:22:06,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-12-09 14:22:06,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:22:06,989 INFO L225 Difference]: With dead ends: 3910 [2020-12-09 14:22:06,989 INFO L226 Difference]: Without dead ends: 2204 [2020-12-09 14:22:06,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:22:06,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2020-12-09 14:22:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1920. [2020-12-09 14:22:07,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-12-09 14:22:07,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2293 transitions. [2020-12-09 14:22:07,020 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2293 transitions. Word has length 121 [2020-12-09 14:22:07,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:22:07,020 INFO L481 AbstractCegarLoop]: Abstraction has 1920 states and 2293 transitions. [2020-12-09 14:22:07,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:22:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2293 transitions. [2020-12-09 14:22:07,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-12-09 14:22:07,024 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:22:07,024 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:22:07,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 14:22:07,024 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:22:07,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:22:07,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1125116997, now seen corresponding path program 1 times [2020-12-09 14:22:07,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:22:07,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626064326] [2020-12-09 14:22:07,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:22:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:22:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 64 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-12-09 14:22:07,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626064326] [2020-12-09 14:22:07,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298071141] [2020-12-09 14:22:07,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:22:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:22:07,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 14:22:07,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:22:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-09 14:22:07,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:22:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-09 14:22:07,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 14:22:07,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 14:22:07,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307471617] [2020-12-09 14:22:07,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:22:07,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:22:07,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:22:07,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:22:07,365 INFO L87 Difference]: Start difference. First operand 1920 states and 2293 transitions. Second operand 3 states. [2020-12-09 14:22:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:22:07,606 INFO L93 Difference]: Finished difference Result 4121 states and 4915 transitions. [2020-12-09 14:22:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:22:07,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2020-12-09 14:22:07,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:22:07,606 INFO L225 Difference]: With dead ends: 4121 [2020-12-09 14:22:07,607 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 14:22:07,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 343 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:22:07,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 14:22:07,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 14:22:07,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 14:22:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 14:22:07,609 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 173 [2020-12-09 14:22:07,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:22:07,609 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 14:22:07,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:22:07,610 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 14:22:07,610 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 14:22:07,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-09 14:22:07,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 14:22:07,945 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 14:22:07,945 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 14:22:07,945 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 14:22:07,945 INFO L262 CegarLoopResult]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 14:22:07,945 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 14:22:07,945 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 14:22:07,945 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 14:22:07,945 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 14:22:07,945 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 14:22:07,945 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L537(line 537) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 14:22:07,946 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 14:22:07,947 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 14:22:07,948 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 14:22:07,948 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (and .cse0 (= ~a17~0 1)) (and (<= 14 ~a8~0) (<= ~a16~0 5)) (<= ~a16~0 4) (and (<= 6 ~a16~0) .cse0) (<= 15 ~a8~0))) [2020-12-09 14:22:07,948 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 14:22:07,948 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 14:22:07,948 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 14:22:07,948 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 14:22:07,948 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 14:22:07,948 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 14:22:07,948 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 14:22:07,948 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 14:22:07,948 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 14:22:07,948 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 14:22:07,948 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 14:22:07,949 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 14:22:07,949 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 14:22:07,949 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 14:22:07,949 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 14:22:07,949 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 14:22:07,949 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 14:22:07,949 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 14:22:07,949 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 14:22:07,949 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 14:22:07,949 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 14:22:07,949 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 14:22:07,949 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 14:22:07,949 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (and .cse0 (= ~a17~0 1)) (and (<= 14 ~a8~0) (<= ~a16~0 5)) (<= ~a16~0 4) (and (<= 6 ~a16~0) .cse0) (<= 15 ~a8~0))) [2020-12-09 14:22:07,949 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 14:22:07,949 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 537) no Hoare annotation was computed. [2020-12-09 14:22:07,950 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 14:22:07,950 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 14:22:07,950 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 14:22:07,950 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 14:22:07,950 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 14:22:07,950 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 14:22:07,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:22:07 BoogieIcfgContainer [2020-12-09 14:22:07,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 14:22:07,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 14:22:07,963 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 14:22:07,963 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 14:22:07,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:22:01" (3/4) ... [2020-12-09 14:22:07,966 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 14:22:07,983 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-12-09 14:22:07,984 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 14:22:07,985 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-09 14:22:07,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 14:22:08,084 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_99a443cf-0ce7-40a0-bd13-18ca473ebbcc/bin/utaipan/witness.graphml [2020-12-09 14:22:08,084 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 14:22:08,086 INFO L168 Benchmark]: Toolchain (without parser) took 8372.01 ms. Allocated memory was 119.5 MB in the beginning and 255.9 MB in the end (delta: 136.3 MB). Free memory was 80.3 MB in the beginning and 215.1 MB in the end (delta: -134.8 MB). Peak memory consumption was 145.7 MB. Max. memory is 16.1 GB. [2020-12-09 14:22:08,086 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 119.5 MB. Free memory is still 98.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:22:08,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.06 ms. Allocated memory is still 119.5 MB. Free memory was 80.1 MB in the beginning and 79.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 14:22:08,086 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.70 ms. Allocated memory is still 119.5 MB. Free memory was 79.0 MB in the beginning and 73.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 14:22:08,086 INFO L168 Benchmark]: Boogie Preprocessor took 43.23 ms. Allocated memory is still 119.5 MB. Free memory was 73.4 MB in the beginning and 68.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 14:22:08,087 INFO L168 Benchmark]: RCFGBuilder took 1338.17 ms. Allocated memory was 119.5 MB in the beginning and 146.8 MB in the end (delta: 27.3 MB). Free memory was 68.5 MB in the beginning and 96.2 MB in the end (delta: -27.7 MB). Peak memory consumption was 51.5 MB. Max. memory is 16.1 GB. [2020-12-09 14:22:08,087 INFO L168 Benchmark]: TraceAbstraction took 6433.35 ms. Allocated memory was 146.8 MB in the beginning and 255.9 MB in the end (delta: 109.1 MB). Free memory was 96.2 MB in the beginning and 80.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 123.6 MB. Max. memory is 16.1 GB. [2020-12-09 14:22:08,087 INFO L168 Benchmark]: Witness Printer took 121.46 ms. Allocated memory is still 255.9 MB. Free memory was 80.6 MB in the beginning and 215.1 MB in the end (delta: -134.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:22:08,089 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 119.5 MB. Free memory is still 98.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 374.06 ms. Allocated memory is still 119.5 MB. Free memory was 80.1 MB in the beginning and 79.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.70 ms. Allocated memory is still 119.5 MB. Free memory was 79.0 MB in the beginning and 73.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.23 ms. Allocated memory is still 119.5 MB. Free memory was 73.4 MB in the beginning and 68.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1338.17 ms. Allocated memory was 119.5 MB in the beginning and 146.8 MB in the end (delta: 27.3 MB). Free memory was 68.5 MB in the beginning and 96.2 MB in the end (delta: -27.7 MB). Peak memory consumption was 51.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6433.35 ms. Allocated memory was 146.8 MB in the beginning and 255.9 MB in the end (delta: 109.1 MB). Free memory was 96.2 MB in the beginning and 80.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 123.6 MB. Max. memory is 16.1 GB. * Witness Printer took 121.46 ms. Allocated memory is still 255.9 MB. Free memory was 80.6 MB in the beginning and 215.1 MB in the end (delta: -134.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 537]: 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: ((((a20 == 1 && a17 == 1) || (14 <= a8 && a16 <= 5)) || a16 <= 4) || (6 <= a16 && a20 == 1)) || 15 <= a8 - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((a20 == 1 && a17 == 1) || (14 <= a8 && a16 <= 5)) || a16 <= 4) || (6 <= a16 && a20 == 1)) || 15 <= a8 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 12, TraceHistogramMax: 5, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 577 SDtfs, 784 SDslu, 54 SDs, 0 SdLazy, 2737 SolverSat, 734 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 818 GetRequests, 795 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1920occurred 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: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 854 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 71 NumberOfFragments, 57 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2338 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 96 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1587 NumberOfCodeBlocks, 1587 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1966 ConstructedInterpolants, 0 QuantifiedInterpolants, 500088 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1052 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 909/918 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...