./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/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 6e09c4e3c62f766a4d5c6b2391f1938dd364423c .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:30:11,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:30:11,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:30:11,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:30:11,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:30:11,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:30:11,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:30:11,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:30:11,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:30:11,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:30:11,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:30:11,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:30:11,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:30:11,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:30:11,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:30:11,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:30:11,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:30:11,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:30:11,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:30:11,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:30:11,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:30:11,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:30:11,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:30:11,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:30:11,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:30:11,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:30:11,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:30:11,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:30:11,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:30:11,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:30:11,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:30:11,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:30:11,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:30:11,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:30:11,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:30:11,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:30:11,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:30:11,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:30:11,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:30:11,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:30:11,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:30:11,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:30:12,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:30:12,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:30:12,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:30:12,017 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:30:12,017 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:30:12,017 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:30:12,017 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:30:12,018 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:30:12,018 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:30:12,018 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:30:12,019 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:30:12,019 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:30:12,020 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:30:12,020 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:30:12,020 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:30:12,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:30:12,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:30:12,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:30:12,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:30:12,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:30:12,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:30:12,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:30:12,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:30:12,023 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:30:12,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:30:12,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:30:12,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:30:12,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:30:12,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:30:12,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:30:12,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:30:12,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:30:12,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:30:12,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:30:12,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:30:12,027 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:30:12,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:30:12,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:30:12,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:30:12,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:30:12,028 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_a555dd01-5083-43cd-9e94-7f7303f71187/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e09c4e3c62f766a4d5c6b2391f1938dd364423c [2020-11-28 07:30:12,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:30:12,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:30:12,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:30:12,378 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:30:12,379 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:30:12,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label20.c [2020-11-28 07:30:12,455 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/bin/utaipan/data/c0bce2757/912c6b37eafc4c69a01ebc72c7631aca/FLAG1c694e9ce [2020-11-28 07:30:13,097 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:30:13,098 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/sv-benchmarks/c/eca-rers2012/Problem02_label20.c [2020-11-28 07:30:13,112 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/bin/utaipan/data/c0bce2757/912c6b37eafc4c69a01ebc72c7631aca/FLAG1c694e9ce [2020-11-28 07:30:13,346 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/bin/utaipan/data/c0bce2757/912c6b37eafc4c69a01ebc72c7631aca [2020-11-28 07:30:13,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:30:13,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:30:13,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:13,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:30:13,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:30:13,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:13" (1/1) ... [2020-11-28 07:30:13,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be12cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:13, skipping insertion in model container [2020-11-28 07:30:13,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:13" (1/1) ... [2020-11-28 07:30:13,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:30:13,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:30:13,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:13,899 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:30:14,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:14,057 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:30:14,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14 WrapperNode [2020-11-28 07:30:14,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:14,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:14,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:30:14,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:30:14,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:14,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:30:14,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:30:14,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:30:14,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:30:14,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:30:14,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:30:14,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:30:14,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:30:14,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:30:14,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:30:14,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:30:14,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:30:16,667 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:30:16,667 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:30:16,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:16 BoogieIcfgContainer [2020-11-28 07:30:16,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:30:16,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:30:16,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:30:16,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:30:16,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:30:13" (1/3) ... [2020-11-28 07:30:16,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e453a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:16, skipping insertion in model container [2020-11-28 07:30:16,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (2/3) ... [2020-11-28 07:30:16,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e453a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:16, skipping insertion in model container [2020-11-28 07:30:16,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:16" (3/3) ... [2020-11-28 07:30:16,678 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label20.c [2020-11-28 07:30:16,690 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:30:16,694 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:30:16,706 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:30:16,729 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:30:16,730 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:30:16,730 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:30:16,730 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:30:16,730 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:30:16,730 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:30:16,730 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:30:16,731 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:30:16,745 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-28 07:30:16,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-28 07:30:16,754 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:16,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:16,755 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:16,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:16,761 INFO L82 PathProgramCache]: Analyzing trace with hash -216555193, now seen corresponding path program 1 times [2020-11-28 07:30:16,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:16,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44600888] [2020-11-28 07:30:16,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:17,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44600888] [2020-11-28 07:30:17,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:17,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:30:17,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635235825] [2020-11-28 07:30:17,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:17,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:17,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:17,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:17,243 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-28 07:30:17,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:17,830 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-28 07:30:17,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:17,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-28 07:30:17,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:17,857 INFO L225 Difference]: With dead ends: 251 [2020-11-28 07:30:17,858 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:30:17,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:17,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:30:17,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:30:17,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:30:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2020-11-28 07:30:17,938 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2020-11-28 07:30:17,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:17,941 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2020-11-28 07:30:17,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:17,941 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2020-11-28 07:30:17,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-28 07:30:17,960 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:17,961 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:17,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:30:17,961 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:17,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:17,965 INFO L82 PathProgramCache]: Analyzing trace with hash -215867119, now seen corresponding path program 1 times [2020-11-28 07:30:17,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:17,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193907600] [2020-11-28 07:30:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:18,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193907600] [2020-11-28 07:30:18,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:18,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:30:18,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758085659] [2020-11-28 07:30:18,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:18,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:18,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:18,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:18,085 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2020-11-28 07:30:18,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:18,350 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2020-11-28 07:30:18,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:18,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-28 07:30:18,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:18,353 INFO L225 Difference]: With dead ends: 325 [2020-11-28 07:30:18,353 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:30:18,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:18,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:30:18,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:30:18,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:30:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2020-11-28 07:30:18,368 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2020-11-28 07:30:18,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:18,368 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2020-11-28 07:30:18,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2020-11-28 07:30:18,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-28 07:30:18,374 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:18,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:18,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:30:18,375 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:18,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:18,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1467809316, now seen corresponding path program 1 times [2020-11-28 07:30:18,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:18,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184445353] [2020-11-28 07:30:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:18,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184445353] [2020-11-28 07:30:18,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:18,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:30:18,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825834995] [2020-11-28 07:30:18,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:18,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:18,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:18,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:18,502 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2020-11-28 07:30:18,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:18,900 INFO L93 Difference]: Finished difference Result 487 states and 847 transitions. [2020-11-28 07:30:18,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:18,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-28 07:30:18,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:18,904 INFO L225 Difference]: With dead ends: 487 [2020-11-28 07:30:18,904 INFO L226 Difference]: Without dead ends: 325 [2020-11-28 07:30:18,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:18,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-11-28 07:30:18,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2020-11-28 07:30:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-28 07:30:18,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 534 transitions. [2020-11-28 07:30:18,941 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 534 transitions. Word has length 98 [2020-11-28 07:30:18,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:18,942 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 534 transitions. [2020-11-28 07:30:18,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:18,942 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 534 transitions. [2020-11-28 07:30:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-28 07:30:18,944 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:18,945 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:18,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:30:18,950 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:18,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:18,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1495844585, now seen corresponding path program 1 times [2020-11-28 07:30:18,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:18,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198734155] [2020-11-28 07:30:18,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-28 07:30:19,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198734155] [2020-11-28 07:30:19,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:19,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:30:19,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6419517] [2020-11-28 07:30:19,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:19,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:19,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:19,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:19,038 INFO L87 Difference]: Start difference. First operand 323 states and 534 transitions. Second operand 3 states. [2020-11-28 07:30:19,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:19,519 INFO L93 Difference]: Finished difference Result 807 states and 1334 transitions. [2020-11-28 07:30:19,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:19,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-11-28 07:30:19,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:19,523 INFO L225 Difference]: With dead ends: 807 [2020-11-28 07:30:19,523 INFO L226 Difference]: Without dead ends: 485 [2020-11-28 07:30:19,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:19,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-11-28 07:30:19,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 483. [2020-11-28 07:30:19,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-28 07:30:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 715 transitions. [2020-11-28 07:30:19,563 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 715 transitions. Word has length 102 [2020-11-28 07:30:19,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:19,564 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 715 transitions. [2020-11-28 07:30:19,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:19,564 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 715 transitions. [2020-11-28 07:30:19,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-28 07:30:19,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:19,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:19,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:30:19,567 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:19,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:19,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1297369134, now seen corresponding path program 1 times [2020-11-28 07:30:19,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:19,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463560019] [2020-11-28 07:30:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:19,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463560019] [2020-11-28 07:30:19,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:19,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:30:19,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440192537] [2020-11-28 07:30:19,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:19,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:19,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:19,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:19,665 INFO L87 Difference]: Start difference. First operand 483 states and 715 transitions. Second operand 3 states. [2020-11-28 07:30:20,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:20,197 INFO L93 Difference]: Finished difference Result 1125 states and 1730 transitions. [2020-11-28 07:30:20,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:20,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-11-28 07:30:20,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:20,203 INFO L225 Difference]: With dead ends: 1125 [2020-11-28 07:30:20,204 INFO L226 Difference]: Without dead ends: 723 [2020-11-28 07:30:20,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:20,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-11-28 07:30:20,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-11-28 07:30:20,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-11-28 07:30:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1031 transitions. [2020-11-28 07:30:20,237 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1031 transitions. Word has length 102 [2020-11-28 07:30:20,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:20,238 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1031 transitions. [2020-11-28 07:30:20,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:20,239 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1031 transitions. [2020-11-28 07:30:20,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-28 07:30:20,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:20,241 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:20,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:30:20,241 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:20,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:20,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1095831986, now seen corresponding path program 1 times [2020-11-28 07:30:20,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:20,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112365215] [2020-11-28 07:30:20,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-28 07:30:20,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112365215] [2020-11-28 07:30:20,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511097432] [2020-11-28 07:30:20,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:20,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:30:20,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:30:20,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:30:20,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:30:20,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-28 07:30:20,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747643460] [2020-11-28 07:30:20,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:20,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:20,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:20,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:30:20,662 INFO L87 Difference]: Start difference. First operand 723 states and 1031 transitions. Second operand 3 states. [2020-11-28 07:30:21,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:21,244 INFO L93 Difference]: Finished difference Result 1605 states and 2382 transitions. [2020-11-28 07:30:21,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:21,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-28 07:30:21,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:21,251 INFO L225 Difference]: With dead ends: 1605 [2020-11-28 07:30:21,251 INFO L226 Difference]: Without dead ends: 963 [2020-11-28 07:30:21,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:30:21,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-11-28 07:30:21,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 803. [2020-11-28 07:30:21,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-11-28 07:30:21,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1110 transitions. [2020-11-28 07:30:21,299 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1110 transitions. Word has length 107 [2020-11-28 07:30:21,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:21,299 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1110 transitions. [2020-11-28 07:30:21,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:21,300 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1110 transitions. [2020-11-28 07:30:21,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-28 07:30:21,305 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:21,305 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:21,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 07:30:21,520 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:21,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:21,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1185220143, now seen corresponding path program 1 times [2020-11-28 07:30:21,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:21,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686424989] [2020-11-28 07:30:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:21,613 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:21,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686424989] [2020-11-28 07:30:21,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:21,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:30:21,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654011604] [2020-11-28 07:30:21,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:21,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:21,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:21,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:21,618 INFO L87 Difference]: Start difference. First operand 803 states and 1110 transitions. Second operand 3 states. [2020-11-28 07:30:22,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:22,063 INFO L93 Difference]: Finished difference Result 1605 states and 2249 transitions. [2020-11-28 07:30:22,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:22,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-11-28 07:30:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:22,071 INFO L225 Difference]: With dead ends: 1605 [2020-11-28 07:30:22,071 INFO L226 Difference]: Without dead ends: 883 [2020-11-28 07:30:22,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:22,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-11-28 07:30:22,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2020-11-28 07:30:22,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-11-28 07:30:22,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1180 transitions. [2020-11-28 07:30:22,096 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1180 transitions. Word has length 116 [2020-11-28 07:30:22,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:22,097 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1180 transitions. [2020-11-28 07:30:22,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:22,098 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1180 transitions. [2020-11-28 07:30:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-28 07:30:22,100 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:22,100 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:22,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:30:22,100 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:22,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:22,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1589976485, now seen corresponding path program 1 times [2020-11-28 07:30:22,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:22,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032486847] [2020-11-28 07:30:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:22,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032486847] [2020-11-28 07:30:22,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:22,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:30:22,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622686015] [2020-11-28 07:30:22,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:22,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:22,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:22,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:22,219 INFO L87 Difference]: Start difference. First operand 883 states and 1180 transitions. Second operand 3 states. [2020-11-28 07:30:22,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:22,639 INFO L93 Difference]: Finished difference Result 1685 states and 2274 transitions. [2020-11-28 07:30:22,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:22,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2020-11-28 07:30:22,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:22,643 INFO L225 Difference]: With dead ends: 1685 [2020-11-28 07:30:22,643 INFO L226 Difference]: Without dead ends: 803 [2020-11-28 07:30:22,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:22,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-11-28 07:30:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 723. [2020-11-28 07:30:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-11-28 07:30:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 906 transitions. [2020-11-28 07:30:22,664 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 906 transitions. Word has length 120 [2020-11-28 07:30:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:22,665 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 906 transitions. [2020-11-28 07:30:22,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:22,665 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 906 transitions. [2020-11-28 07:30:22,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-28 07:30:22,668 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:22,668 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-28 07:30:22,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:30:22,668 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:22,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:22,669 INFO L82 PathProgramCache]: Analyzing trace with hash -207292237, now seen corresponding path program 1 times [2020-11-28 07:30:22,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:22,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219492265] [2020-11-28 07:30:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:30:22,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219492265] [2020-11-28 07:30:22,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:22,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:30:22,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228954349] [2020-11-28 07:30:22,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:22,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:22,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:22,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:22,790 INFO L87 Difference]: Start difference. First operand 723 states and 906 transitions. Second operand 3 states. [2020-11-28 07:30:23,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:23,259 INFO L93 Difference]: Finished difference Result 1605 states and 2032 transitions. [2020-11-28 07:30:23,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:23,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-11-28 07:30:23,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:23,264 INFO L225 Difference]: With dead ends: 1605 [2020-11-28 07:30:23,264 INFO L226 Difference]: Without dead ends: 723 [2020-11-28 07:30:23,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:23,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-11-28 07:30:23,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-11-28 07:30:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-11-28 07:30:23,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 878 transitions. [2020-11-28 07:30:23,288 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 878 transitions. Word has length 171 [2020-11-28 07:30:23,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:23,288 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 878 transitions. [2020-11-28 07:30:23,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:23,288 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 878 transitions. [2020-11-28 07:30:23,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-11-28 07:30:23,291 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:23,292 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:30:23,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:30:23,292 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:23,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:23,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1862271489, now seen corresponding path program 1 times [2020-11-28 07:30:23,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:23,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412511289] [2020-11-28 07:30:23,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-11-28 07:30:23,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412511289] [2020-11-28 07:30:23,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941543580] [2020-11-28 07:30:23,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:23,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:30:23,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-11-28 07:30:23,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-11-28 07:30:23,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:30:23,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-28 07:30:23,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022784570] [2020-11-28 07:30:23,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:23,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:23,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:23,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:30:23,617 INFO L87 Difference]: Start difference. First operand 723 states and 878 transitions. Second operand 3 states. [2020-11-28 07:30:24,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:24,107 INFO L93 Difference]: Finished difference Result 1683 states and 2085 transitions. [2020-11-28 07:30:24,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:24,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2020-11-28 07:30:24,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:24,108 INFO L225 Difference]: With dead ends: 1683 [2020-11-28 07:30:24,108 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:30:24,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:30:24,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:30:24,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:30:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:30:24,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:30:24,111 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 185 [2020-11-28 07:30:24,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:24,111 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:30:24,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:30:24,111 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:30:24,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 07:30:24,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:30:24,503 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-11-28 07:30:24,630 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-11-28 07:30:24,635 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-28 07:30:24,635 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-28 07:30:24,635 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-28 07:30:24,635 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-28 07:30:24,635 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-28 07:30:24,636 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-28 07:30:24,636 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-28 07:30:24,636 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-28 07:30:24,636 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-28 07:30:24,636 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-28 07:30:24,636 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-28 07:30:24,636 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-28 07:30:24,636 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-28 07:30:24,636 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-28 07:30:24,636 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-28 07:30:24,636 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-28 07:30:24,637 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-28 07:30:24,637 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-28 07:30:24,637 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-28 07:30:24,637 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-28 07:30:24,637 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-28 07:30:24,637 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-28 07:30:24,637 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-28 07:30:24,637 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-28 07:30:24,637 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-28 07:30:24,637 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-28 07:30:24,638 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:30:24,638 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-28 07:30:24,638 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-28 07:30:24,638 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-28 07:30:24,638 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-28 07:30:24,638 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-28 07:30:24,638 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-28 07:30:24,638 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-28 07:30:24,638 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-28 07:30:24,638 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-28 07:30:24,639 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:30:24,639 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-28 07:30:24,639 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-28 07:30:24,639 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-28 07:30:24,639 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-28 07:30:24,639 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-28 07:30:24,644 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-28 07:30:24,645 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-28 07:30:24,645 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-28 07:30:24,645 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-28 07:30:24,645 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-28 07:30:24,645 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-28 07:30:24,645 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-28 07:30:24,646 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-28 07:30:24,646 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-28 07:30:24,646 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-28 07:30:24,646 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-28 07:30:24,647 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse3 (= ~a25~0 0)) (.cse2 (<= ~a28~0 10)) (.cse4 (= ~a19~0 1)) (.cse5 (<= 8 ~a17~0)) (.cse0 (= ~a25~0 1)) (.cse1 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2) (and (<= ~a19~0 0) .cse3 .cse1 .cse2) (and (<= 9 ~a28~0) .cse4 .cse3 (<= ~a17~0 7) .cse2) (and .cse3 .cse5 .cse1 .cse2) (and .cse4 .cse5 .cse0 .cse1))) [2020-11-28 07:30:24,648 INFO L274 CegarLoopResult]: For program point L475-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:30:24,649 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-28 07:30:24,649 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-28 07:30:24,649 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-28 07:30:24,649 INFO L274 CegarLoopResult]: For program point L478-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:30:24,649 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-28 07:30:24,650 INFO L274 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-11-28 07:30:24,650 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-28 07:30:24,650 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-28 07:30:24,652 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-28 07:30:24,653 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-28 07:30:24,653 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:30:24,653 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-28 07:30:24,653 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-28 07:30:24,654 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse3 (= ~a25~0 0)) (.cse2 (<= ~a28~0 10)) (.cse4 (= ~a19~0 1)) (.cse5 (<= 8 ~a17~0)) (.cse0 (= ~a25~0 1)) (.cse1 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2) (and (<= ~a19~0 0) .cse3 .cse1 .cse2) (and (<= 9 ~a28~0) .cse4 .cse3 (<= ~a17~0 7) .cse2) (and .cse3 .cse5 .cse1 .cse2) (and .cse4 .cse5 .cse0 .cse1))) [2020-11-28 07:30:24,654 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-28 07:30:24,654 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-28 07:30:24,654 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-28 07:30:24,654 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-28 07:30:24,654 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-28 07:30:24,655 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-28 07:30:24,655 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-28 07:30:24,655 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-28 07:30:24,655 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-28 07:30:24,655 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-28 07:30:24,655 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-28 07:30:24,656 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-28 07:30:24,656 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-28 07:30:24,656 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-28 07:30:24,656 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-28 07:30:24,656 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-28 07:30:24,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:30:24 BoogieIcfgContainer [2020-11-28 07:30:24,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:30:24,693 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:30:24,694 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:30:24,694 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:30:24,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:16" (3/4) ... [2020-11-28 07:30:24,700 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:30:24,736 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2020-11-28 07:30:24,738 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-28 07:30:24,740 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:30:24,741 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:30:24,884 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a555dd01-5083-43cd-9e94-7f7303f71187/bin/utaipan/witness.graphml [2020-11-28 07:30:24,884 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:30:24,885 INFO L168 Benchmark]: Toolchain (without parser) took 11535.35 ms. Allocated memory was 123.7 MB in the beginning and 287.3 MB in the end (delta: 163.6 MB). Free memory was 92.2 MB in the beginning and 183.0 MB in the end (delta: -90.8 MB). Peak memory consumption was 73.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:24,886 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 83.9 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 41.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:24,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.59 ms. Allocated memory is still 123.7 MB. Free memory was 91.9 MB in the beginning and 83.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:24,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.34 ms. Allocated memory is still 123.7 MB. Free memory was 83.9 MB in the beginning and 78.6 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:24,887 INFO L168 Benchmark]: Boogie Preprocessor took 102.19 ms. Allocated memory is still 123.7 MB. Free memory was 78.6 MB in the beginning and 74.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:24,887 INFO L168 Benchmark]: RCFGBuilder took 2410.59 ms. Allocated memory was 123.7 MB in the beginning and 159.4 MB in the end (delta: 35.7 MB). Free memory was 74.4 MB in the beginning and 86.5 MB in the end (delta: -12.1 MB). Peak memory consumption was 53.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:24,888 INFO L168 Benchmark]: TraceAbstraction took 8021.66 ms. Allocated memory was 159.4 MB in the beginning and 287.3 MB in the end (delta: 127.9 MB). Free memory was 85.5 MB in the beginning and 197.8 MB in the end (delta: -112.4 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:24,888 INFO L168 Benchmark]: Witness Printer took 190.79 ms. Allocated memory is still 287.3 MB. Free memory was 197.8 MB in the beginning and 183.0 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:24,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 83.9 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 41.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 707.59 ms. Allocated memory is still 123.7 MB. Free memory was 91.9 MB in the beginning and 83.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.34 ms. Allocated memory is still 123.7 MB. Free memory was 83.9 MB in the beginning and 78.6 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 102.19 ms. Allocated memory is still 123.7 MB. Free memory was 78.6 MB in the beginning and 74.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2410.59 ms. Allocated memory was 123.7 MB in the beginning and 159.4 MB in the end (delta: 35.7 MB). Free memory was 74.4 MB in the beginning and 86.5 MB in the end (delta: -12.1 MB). Peak memory consumption was 53.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8021.66 ms. Allocated memory was 159.4 MB in the beginning and 287.3 MB in the end (delta: 127.9 MB). Free memory was 85.5 MB in the beginning and 197.8 MB in the end (delta: -112.4 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * Witness Printer took 190.79 ms. Allocated memory is still 287.3 MB. Free memory was 197.8 MB in the beginning and 183.0 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((a25 == 1 && a17 <= 8) && a28 <= 10) || (((a19 <= 0 && a25 == 0) && a17 <= 8) && a28 <= 10)) || ((((9 <= a28 && a19 == 1) && a25 == 0) && a17 <= 7) && a28 <= 10)) || (((a25 == 0 && 8 <= a17) && a17 <= 8) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((a25 == 1 && a17 <= 8) && a28 <= 10) || (((a19 <= 0 && a25 == 0) && a17 <= 8) && a28 <= 10)) || ((((9 <= a28 && a19 == 1) && a25 == 0) && a17 <= 7) && a28 <= 10)) || (((a25 == 0 && 8 <= a17) && a17 <= 8) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.5s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 659 SDtfs, 651 SDslu, 54 SDs, 0 SdLazy, 2092 SolverSat, 507 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 605 GetRequests, 589 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=883occurred in iteration=7, 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, 10 MinimizatonAttempts, 244 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 39 NumberOfFragments, 133 HoareAnnotationTreeSize, 3 FomulaSimplifications, 600 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1464 NumberOfCodeBlocks, 1464 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1742 ConstructedInterpolants, 0 QuantifiedInterpolants, 362952 SizeOfPredicates, 1 NumberOfNonLiveVariables, 679 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 852/858 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...