./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label18.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 452c1d32baba8964bd2d48cf930cbca4ba96f1cc .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:20:15,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:15,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:15,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:15,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:15,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:15,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:15,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:15,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:15,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:15,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:15,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:15,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:15,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:15,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:15,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:15,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:15,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:15,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:15,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:15,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:15,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:15,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:15,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:15,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:15,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:15,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:15,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:15,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:15,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:15,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:15,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:15,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:15,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:15,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:15,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:15,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:15,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:15,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:15,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:15,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:15,981 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:20:16,005 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:16,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:16,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:16,007 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:16,007 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:16,007 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:16,008 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:20:16,008 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:16,008 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:16,008 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:20:16,009 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:20:16,009 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:16,009 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:20:16,009 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:20:16,010 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:20:16,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:16,011 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:20:16,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:20:16,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:20:16,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:16,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:20:16,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:16,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:20:16,012 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:20:16,012 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:20:16,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:20:16,013 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:16,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:20:16,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:16,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:16,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:16,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:16,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:16,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:20:16,015 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:20:16,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:20:16,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:20:16,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:16,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:16,016 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 452c1d32baba8964bd2d48cf930cbca4ba96f1cc [2021-10-11 02:20:16,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:16,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:16,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:16,273 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:16,274 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:16,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label18.c [2021-10-11 02:20:16,364 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/data/ca3aa71ed/e3890281674148b4886c97a188bd9e65/FLAGaa96f1deb [2021-10-11 02:20:16,988 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:16,989 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/sv-benchmarks/c/eca-rers2012/Problem01_label18.c [2021-10-11 02:20:17,017 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/data/ca3aa71ed/e3890281674148b4886c97a188bd9e65/FLAGaa96f1deb [2021-10-11 02:20:17,259 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/data/ca3aa71ed/e3890281674148b4886c97a188bd9e65 [2021-10-11 02:20:17,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:17,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:17,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:17,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:17,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:17,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:17" (1/1) ... [2021-10-11 02:20:17,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22812dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:17, skipping insertion in model container [2021-10-11 02:20:17,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:17" (1/1) ... [2021-10-11 02:20:17,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:17,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:17,713 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/sv-benchmarks/c/eca-rers2012/Problem01_label18.c[17985,17998] [2021-10-11 02:20:17,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:17,776 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:17,859 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/sv-benchmarks/c/eca-rers2012/Problem01_label18.c[17985,17998] [2021-10-11 02:20:17,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:17,890 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:17,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:17 WrapperNode [2021-10-11 02:20:17,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:17,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:17,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:17,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:17,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:17" (1/1) ... [2021-10-11 02:20:17,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:17" (1/1) ... [2021-10-11 02:20:18,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:18,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:18,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:18,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:18,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:17" (1/1) ... [2021-10-11 02:20:18,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:17" (1/1) ... [2021-10-11 02:20:18,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:17" (1/1) ... [2021-10-11 02:20:18,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:17" (1/1) ... [2021-10-11 02:20:18,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:17" (1/1) ... [2021-10-11 02:20:18,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:17" (1/1) ... [2021-10-11 02:20:18,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:17" (1/1) ... [2021-10-11 02:20:18,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:18,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:18,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:18,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:18,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:17" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:20:18,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:20:18,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:18,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:20,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:20,400 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:20:20,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:20 BoogieIcfgContainer [2021-10-11 02:20:20,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:20,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:20,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:20,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:20,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:17" (1/3) ... [2021-10-11 02:20:20,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e68066e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:20, skipping insertion in model container [2021-10-11 02:20:20,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:17" (2/3) ... [2021-10-11 02:20:20,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e68066e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:20, skipping insertion in model container [2021-10-11 02:20:20,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:20" (3/3) ... [2021-10-11 02:20:20,415 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label18.c [2021-10-11 02:20:20,430 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:20,434 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:20:20,446 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:20:20,487 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:20,489 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:20:20,489 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:20,489 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:20,489 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:20,489 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:20,490 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:20,490 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:20,508 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:20:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:20:20,518 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:20,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:20,521 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:20,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:20,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1806912088, now seen corresponding path program 1 times [2021-10-11 02:20:20,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:20,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455195509] [2021-10-11 02:20:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:21,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455195509] [2021-10-11 02:20:21,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:21,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:21,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942384039] [2021-10-11 02:20:21,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:21,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:21,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:21,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:21,152 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2021-10-11 02:20:22,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:22,044 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2021-10-11 02:20:22,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:22,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2021-10-11 02:20:22,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:22,059 INFO L225 Difference]: With dead ends: 297 [2021-10-11 02:20:22,059 INFO L226 Difference]: Without dead ends: 216 [2021-10-11 02:20:22,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:20:22,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-11 02:20:22,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-10-11 02:20:22,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:20:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2021-10-11 02:20:22,122 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2021-10-11 02:20:22,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:22,123 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2021-10-11 02:20:22,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:22,123 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2021-10-11 02:20:22,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:20:22,130 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:22,130 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:20:22,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:20:22,130 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:22,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:22,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1703777223, now seen corresponding path program 1 times [2021-10-11 02:20:22,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:22,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753182850] [2021-10-11 02:20:22,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:22,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753182850] [2021-10-11 02:20:22,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:22,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:22,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034027065] [2021-10-11 02:20:22,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:22,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:22,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:22,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:22,357 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2021-10-11 02:20:23,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:23,085 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2021-10-11 02:20:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:23,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-10-11 02:20:23,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:23,090 INFO L225 Difference]: With dead ends: 500 [2021-10-11 02:20:23,090 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:20:23,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:23,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:20:23,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2021-10-11 02:20:23,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:20:23,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2021-10-11 02:20:23,110 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2021-10-11 02:20:23,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:23,110 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2021-10-11 02:20:23,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2021-10-11 02:20:23,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:20:23,115 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:23,115 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:23,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:20:23,116 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:23,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:23,117 INFO L82 PathProgramCache]: Analyzing trace with hash 350099319, now seen corresponding path program 1 times [2021-10-11 02:20:23,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:23,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837183262] [2021-10-11 02:20:23,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:23,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837183262] [2021-10-11 02:20:23,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:23,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:23,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621528241] [2021-10-11 02:20:23,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:23,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:23,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:23,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:23,200 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2021-10-11 02:20:23,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:23,697 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2021-10-11 02:20:23,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:23,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-10-11 02:20:23,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:23,699 INFO L225 Difference]: With dead ends: 573 [2021-10-11 02:20:23,699 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:20:23,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:23,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:20:23,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-11 02:20:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:20:23,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 484 transitions. [2021-10-11 02:20:23,723 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 484 transitions. Word has length 86 [2021-10-11 02:20:23,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:23,724 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 484 transitions. [2021-10-11 02:20:23,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:23,724 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 484 transitions. [2021-10-11 02:20:23,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-11 02:20:23,728 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:23,728 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:23,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:20:23,728 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:23,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:23,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1470705701, now seen corresponding path program 1 times [2021-10-11 02:20:23,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:23,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586418664] [2021-10-11 02:20:23,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:20:23,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586418664] [2021-10-11 02:20:23,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:23,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:23,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260811923] [2021-10-11 02:20:23,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:23,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:23,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:23,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:23,789 INFO L87 Difference]: Start difference. First operand 358 states and 484 transitions. Second operand 3 states. [2021-10-11 02:20:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:24,142 INFO L93 Difference]: Finished difference Result 999 states and 1341 transitions. [2021-10-11 02:20:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:24,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2021-10-11 02:20:24,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:24,146 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:20:24,147 INFO L226 Difference]: Without dead ends: 642 [2021-10-11 02:20:24,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:24,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-11 02:20:24,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2021-10-11 02:20:24,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:20:24,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 780 transitions. [2021-10-11 02:20:24,173 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 780 transitions. Word has length 95 [2021-10-11 02:20:24,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:24,173 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 780 transitions. [2021-10-11 02:20:24,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:24,174 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 780 transitions. [2021-10-11 02:20:24,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-11 02:20:24,178 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:24,178 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:24,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:20:24,178 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:24,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:24,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1745912138, now seen corresponding path program 1 times [2021-10-11 02:20:24,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:24,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851989970] [2021-10-11 02:20:24,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:24,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851989970] [2021-10-11 02:20:24,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:24,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:20:24,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108656213] [2021-10-11 02:20:24,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:24,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:24,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:24,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:24,304 INFO L87 Difference]: Start difference. First operand 571 states and 780 transitions. Second operand 4 states. [2021-10-11 02:20:24,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:24,775 INFO L93 Difference]: Finished difference Result 1283 states and 1756 transitions. [2021-10-11 02:20:24,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:24,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2021-10-11 02:20:24,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:24,780 INFO L225 Difference]: With dead ends: 1283 [2021-10-11 02:20:24,780 INFO L226 Difference]: Without dead ends: 713 [2021-10-11 02:20:24,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:24,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-10-11 02:20:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2021-10-11 02:20:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2021-10-11 02:20:24,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 859 transitions. [2021-10-11 02:20:24,802 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 859 transitions. Word has length 101 [2021-10-11 02:20:24,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:24,803 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 859 transitions. [2021-10-11 02:20:24,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:24,803 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 859 transitions. [2021-10-11 02:20:24,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-11 02:20:24,805 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:24,805 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:24,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:20:24,806 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:24,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:24,806 INFO L82 PathProgramCache]: Analyzing trace with hash -656960691, now seen corresponding path program 1 times [2021-10-11 02:20:24,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:24,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944222601] [2021-10-11 02:20:24,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:24,915 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:20:24,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944222601] [2021-10-11 02:20:24,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:24,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:24,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334312501] [2021-10-11 02:20:24,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:24,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:24,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:24,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:24,918 INFO L87 Difference]: Start difference. First operand 642 states and 859 transitions. Second operand 4 states. [2021-10-11 02:20:25,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:25,495 INFO L93 Difference]: Finished difference Result 1496 states and 1980 transitions. [2021-10-11 02:20:25,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:25,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2021-10-11 02:20:25,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:25,504 INFO L225 Difference]: With dead ends: 1496 [2021-10-11 02:20:25,504 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:20:25,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:25,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:20:25,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2021-10-11 02:20:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:20:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1024 transitions. [2021-10-11 02:20:25,529 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1024 transitions. Word has length 115 [2021-10-11 02:20:25,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:25,530 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1024 transitions. [2021-10-11 02:20:25,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:25,531 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1024 transitions. [2021-10-11 02:20:25,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-11 02:20:25,533 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:25,533 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-11 02:20:25,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:20:25,533 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:25,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:25,534 INFO L82 PathProgramCache]: Analyzing trace with hash 905966120, now seen corresponding path program 1 times [2021-10-11 02:20:25,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:25,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646934005] [2021-10-11 02:20:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:20:25,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646934005] [2021-10-11 02:20:25,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:25,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:25,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609594703] [2021-10-11 02:20:25,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:25,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:25,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:25,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:25,729 INFO L87 Difference]: Start difference. First operand 784 states and 1024 transitions. Second operand 3 states. [2021-10-11 02:20:26,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:26,086 INFO L93 Difference]: Finished difference Result 1709 states and 2200 transitions. [2021-10-11 02:20:26,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:26,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2021-10-11 02:20:26,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:26,092 INFO L225 Difference]: With dead ends: 1709 [2021-10-11 02:20:26,092 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:20:26,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:26,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:20:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2021-10-11 02:20:26,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:20:26,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1018 transitions. [2021-10-11 02:20:26,118 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1018 transitions. Word has length 132 [2021-10-11 02:20:26,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:26,118 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1018 transitions. [2021-10-11 02:20:26,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:26,118 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1018 transitions. [2021-10-11 02:20:26,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-10-11 02:20:26,121 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:26,121 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:20:26,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:20:26,122 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:26,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:26,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1422762038, now seen corresponding path program 1 times [2021-10-11 02:20:26,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:26,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71513062] [2021-10-11 02:20:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:20:26,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71513062] [2021-10-11 02:20:26,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:26,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:26,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655421050] [2021-10-11 02:20:26,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:26,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:26,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:26,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:26,268 INFO L87 Difference]: Start difference. First operand 784 states and 1018 transitions. Second operand 3 states. [2021-10-11 02:20:26,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:26,636 INFO L93 Difference]: Finished difference Result 1709 states and 2188 transitions. [2021-10-11 02:20:26,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:26,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2021-10-11 02:20:26,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:26,642 INFO L225 Difference]: With dead ends: 1709 [2021-10-11 02:20:26,642 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:20:26,644 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 [2021-10-11 02:20:26,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:20:26,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2021-10-11 02:20:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2021-10-11 02:20:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1057 transitions. [2021-10-11 02:20:26,667 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1057 transitions. Word has length 175 [2021-10-11 02:20:26,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:26,668 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1057 transitions. [2021-10-11 02:20:26,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:26,668 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1057 transitions. [2021-10-11 02:20:26,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-10-11 02:20:26,671 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:26,671 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:26,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:20:26,672 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:26,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:26,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1489444553, now seen corresponding path program 1 times [2021-10-11 02:20:26,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:26,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859192615] [2021-10-11 02:20:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 159 proven. 35 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:20:26,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859192615] [2021-10-11 02:20:26,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947841329] [2021-10-11 02:20:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:27,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:20:27,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-11 02:20:27,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-11 02:20:27,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:20:27,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:20:27,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448797099] [2021-10-11 02:20:27,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:27,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:27,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:27,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:20:27,619 INFO L87 Difference]: Start difference. First operand 855 states and 1057 transitions. Second operand 3 states. [2021-10-11 02:20:27,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:27,997 INFO L93 Difference]: Finished difference Result 1993 states and 2475 transitions. [2021-10-11 02:20:27,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:27,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2021-10-11 02:20:27,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:28,004 INFO L225 Difference]: With dead ends: 1993 [2021-10-11 02:20:28,004 INFO L226 Difference]: Without dead ends: 1139 [2021-10-11 02:20:28,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 373 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:20:28,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-11 02:20:28,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2021-10-11 02:20:28,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:20:28,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1256 transitions. [2021-10-11 02:20:28,037 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1256 transitions. Word has length 188 [2021-10-11 02:20:28,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:28,037 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1256 transitions. [2021-10-11 02:20:28,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:28,037 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1256 transitions. [2021-10-11 02:20:28,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-10-11 02:20:28,041 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:28,041 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:28,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-11 02:20:28,262 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:28,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:28,263 INFO L82 PathProgramCache]: Analyzing trace with hash 922663777, now seen corresponding path program 1 times [2021-10-11 02:20:28,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:28,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189672448] [2021-10-11 02:20:28,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-10-11 02:20:28,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189672448] [2021-10-11 02:20:28,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:28,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:28,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638301640] [2021-10-11 02:20:28,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:28,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:28,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:28,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:28,441 INFO L87 Difference]: Start difference. First operand 997 states and 1256 transitions. Second operand 3 states. [2021-10-11 02:20:28,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:28,794 INFO L93 Difference]: Finished difference Result 2206 states and 2847 transitions. [2021-10-11 02:20:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:28,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2021-10-11 02:20:28,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:28,802 INFO L225 Difference]: With dead ends: 2206 [2021-10-11 02:20:28,803 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:20:28,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:28,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:20:28,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2021-10-11 02:20:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:20:28,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1455 transitions. [2021-10-11 02:20:28,840 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1455 transitions. Word has length 197 [2021-10-11 02:20:28,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:28,840 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1455 transitions. [2021-10-11 02:20:28,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:28,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1455 transitions. [2021-10-11 02:20:28,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-10-11 02:20:28,845 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:28,845 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:20:28,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:20:28,845 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:28,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:28,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1501971387, now seen corresponding path program 1 times [2021-10-11 02:20:28,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:28,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690720890] [2021-10-11 02:20:28,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 175 proven. 83 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:20:29,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690720890] [2021-10-11 02:20:29,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595955557] [2021-10-11 02:20:29,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:29,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:20:29,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-10-11 02:20:29,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-10-11 02:20:29,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:20:29,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:20:29,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038446296] [2021-10-11 02:20:29,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:29,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:29,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:29,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:20:29,863 INFO L87 Difference]: Start difference. First operand 1139 states and 1455 transitions. Second operand 3 states. [2021-10-11 02:20:30,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:30,343 INFO L93 Difference]: Finished difference Result 2703 states and 3470 transitions. [2021-10-11 02:20:30,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:30,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2021-10-11 02:20:30,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:30,353 INFO L225 Difference]: With dead ends: 2703 [2021-10-11 02:20:30,354 INFO L226 Difference]: Without dead ends: 1565 [2021-10-11 02:20:30,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 424 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:20:30,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2021-10-11 02:20:30,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1281. [2021-10-11 02:20:30,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2021-10-11 02:20:30,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1646 transitions. [2021-10-11 02:20:30,393 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1646 transitions. Word has length 213 [2021-10-11 02:20:30,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:30,394 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1646 transitions. [2021-10-11 02:20:30,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:30,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1646 transitions. [2021-10-11 02:20:30,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-10-11 02:20:30,399 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:30,399 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:30,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:30,616 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:30,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:30,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1337022783, now seen corresponding path program 1 times [2021-10-11 02:20:30,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:30,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145738382] [2021-10-11 02:20:30,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 82 proven. 261 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:20:30,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145738382] [2021-10-11 02:20:30,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109212450] [2021-10-11 02:20:30,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:31,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:20:31,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-11 02:20:31,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-11 02:20:31,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:20:31,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2021-10-11 02:20:31,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930465395] [2021-10-11 02:20:31,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:31,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:31,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:31,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:20:31,663 INFO L87 Difference]: Start difference. First operand 1281 states and 1646 transitions. Second operand 3 states. [2021-10-11 02:20:32,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:32,036 INFO L93 Difference]: Finished difference Result 2845 states and 3638 transitions. [2021-10-11 02:20:32,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:32,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2021-10-11 02:20:32,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:32,045 INFO L225 Difference]: With dead ends: 2845 [2021-10-11 02:20:32,045 INFO L226 Difference]: Without dead ends: 1352 [2021-10-11 02:20:32,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:20:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-11 02:20:32,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1210. [2021-10-11 02:20:32,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:20:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1494 transitions. [2021-10-11 02:20:32,086 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1494 transitions. Word has length 242 [2021-10-11 02:20:32,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:32,087 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1494 transitions. [2021-10-11 02:20:32,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1494 transitions. [2021-10-11 02:20:32,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-10-11 02:20:32,093 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:32,093 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:32,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-11 02:20:32,319 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:32,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:32,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1841243056, now seen corresponding path program 1 times [2021-10-11 02:20:32,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:32,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778907901] [2021-10-11 02:20:32,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 182 proven. 103 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-11 02:20:32,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778907901] [2021-10-11 02:20:32,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356461860] [2021-10-11 02:20:32,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:32,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:20:32,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-10-11 02:20:33,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-10-11 02:20:33,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:20:33,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:20:33,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075771060] [2021-10-11 02:20:33,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:33,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:33,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:33,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:33,382 INFO L87 Difference]: Start difference. First operand 1210 states and 1494 transitions. Second operand 3 states. [2021-10-11 02:20:33,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:33,710 INFO L93 Difference]: Finished difference Result 2488 states and 3078 transitions. [2021-10-11 02:20:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:33,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 255 [2021-10-11 02:20:33,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:33,711 INFO L225 Difference]: With dead ends: 2488 [2021-10-11 02:20:33,712 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:20:33,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 508 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:33,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:20:33,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:20:33,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:20:33,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:20:33,715 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 255 [2021-10-11 02:20:33,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:33,716 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:20:33,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:33,716 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:20:33,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:20:33,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:33,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:20:34,268 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2021-10-11 02:20:34,516 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2021-10-11 02:20:34,520 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:20:34,520 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:20:34,520 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:20:34,520 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:20:34,520 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:20:34,520 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:20:34,521 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:20:34,521 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:20:34,521 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:20:34,521 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:20:34,521 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:20:34,521 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:20:34,522 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:20:34,522 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:20:34,522 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:20:34,522 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:20:34,522 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:20:34,522 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:20:34,522 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:20:34,523 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:20:34,523 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:20:34,523 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:20:34,523 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:20:34,523 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:20:34,523 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:20:34,525 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:20:34,525 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:20:34,525 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:20:34,525 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:20:34,525 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:20:34,525 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:20:34,525 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:20:34,526 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:20:34,526 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:20:34,526 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:20:34,526 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:20:34,526 INFO L262 CegarLoopResult]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:20:34,526 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:20:34,526 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:20:34,526 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:20:34,527 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:20:34,528 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a16~0 6)) (.cse3 (<= 15 ~a8~0)) (.cse2 (not (= ~a7~0 1))) (.cse6 (= ~a17~0 1)) (.cse1 (<= ~a17~0 0)) (.cse4 (<= ~a16~0 5)) (.cse7 (= ~a20~0 1)) (.cse5 (<= ~a8~0 13))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse2 .cse5) (and .cse0 .cse2 .cse3 .cse6) (and .cse0 .cse1 .cse7 .cse5) (and .cse4 .cse2 .cse3 .cse6) (and .cse7 .cse2 .cse5) (and .cse1 .cse7 .cse2) (and (= ~a21~0 1) (= ~a12~0 8) .cse7 .cse2 .cse6) (and .cse4 .cse6 .cse5) (and .cse4 .cse1) (and .cse4 .cse7 .cse5))) [2021-10-11 02:20:34,529 INFO L262 CegarLoopResult]: For program point L485-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:20:34,529 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:20:34,529 INFO L262 CegarLoopResult]: For program point L486(line 486) no Hoare annotation was computed. [2021-10-11 02:20:34,529 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:20:34,529 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:20:34,529 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:20:34,529 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:20:34,530 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:20:34,530 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:20:34,530 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:20:34,530 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:20:34,530 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:20:34,530 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:20:34,530 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:20:34,531 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:20:34,531 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:20:34,531 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:20:34,531 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:20:34,531 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:20:34,531 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:20:34,531 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:20:34,531 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:20:34,532 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:20:34,532 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:20:34,532 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:20:34,532 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a16~0 6)) (.cse3 (<= 15 ~a8~0)) (.cse2 (not (= ~a7~0 1))) (.cse6 (= ~a17~0 1)) (.cse1 (<= ~a17~0 0)) (.cse4 (<= ~a16~0 5)) (.cse7 (= ~a20~0 1)) (.cse5 (<= ~a8~0 13))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse2 .cse5) (and .cse0 .cse2 .cse3 .cse6) (and .cse0 .cse1 .cse7 .cse5) (and .cse4 .cse2 .cse3 .cse6) (and .cse7 .cse2 .cse5) (and .cse1 .cse7 .cse2) (and (= ~a21~0 1) (= ~a12~0 8) .cse7 .cse2 .cse6) (and .cse4 .cse6 .cse5) (and .cse4 .cse1) (and .cse4 .cse7 .cse5))) [2021-10-11 02:20:34,533 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:20:34,533 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 486) no Hoare annotation was computed. [2021-10-11 02:20:34,533 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:20:34,533 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:20:34,534 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:20:34,534 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:20:34,534 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:20:34,534 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:20:34,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:20:34 BoogieIcfgContainer [2021-10-11 02:20:34,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:20:34,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:20:34,571 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:20:34,571 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:20:34,571 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:20" (3/4) ... [2021-10-11 02:20:34,574 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:20:34,602 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:20:34,604 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-11 02:20:34,606 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:20:34,607 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:20:34,733 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8538d570-b1ce-4f46-a1e0-c57bf33e5b0a/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:20:34,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:20:34,735 INFO L168 Benchmark]: Toolchain (without parser) took 17471.93 ms. Allocated memory was 92.3 MB in the beginning and 465.6 MB in the end (delta: 373.3 MB). Free memory was 57.7 MB in the beginning and 239.6 MB in the end (delta: -182.0 MB). Peak memory consumption was 192.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:34,735 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 46.5 MB in the beginning and 46.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:34,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.39 ms. Allocated memory was 92.3 MB in the beginning and 130.0 MB in the end (delta: 37.7 MB). Free memory was 57.5 MB in the beginning and 88.9 MB in the end (delta: -31.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:34,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.15 ms. Allocated memory is still 130.0 MB. Free memory was 88.9 MB in the beginning and 83.4 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:34,736 INFO L168 Benchmark]: Boogie Preprocessor took 69.65 ms. Allocated memory is still 130.0 MB. Free memory was 83.4 MB in the beginning and 78.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:34,737 INFO L168 Benchmark]: RCFGBuilder took 2324.44 ms. Allocated memory was 130.0 MB in the beginning and 176.2 MB in the end (delta: 46.1 MB). Free memory was 78.4 MB in the beginning and 132.4 MB in the end (delta: -54.0 MB). Peak memory consumption was 54.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:34,737 INFO L168 Benchmark]: TraceAbstraction took 14163.60 ms. Allocated memory was 176.2 MB in the beginning and 465.6 MB in the end (delta: 289.4 MB). Free memory was 131.4 MB in the beginning and 254.5 MB in the end (delta: -123.1 MB). Peak memory consumption was 166.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:34,738 INFO L168 Benchmark]: Witness Printer took 163.10 ms. Allocated memory is still 465.6 MB. Free memory was 254.5 MB in the beginning and 239.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:34,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 46.5 MB in the beginning and 46.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 616.39 ms. Allocated memory was 92.3 MB in the beginning and 130.0 MB in the end (delta: 37.7 MB). Free memory was 57.5 MB in the beginning and 88.9 MB in the end (delta: -31.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 115.15 ms. Allocated memory is still 130.0 MB. Free memory was 88.9 MB in the beginning and 83.4 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.65 ms. Allocated memory is still 130.0 MB. Free memory was 83.4 MB in the beginning and 78.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2324.44 ms. Allocated memory was 130.0 MB in the beginning and 176.2 MB in the end (delta: 46.1 MB). Free memory was 78.4 MB in the beginning and 132.4 MB in the end (delta: -54.0 MB). Peak memory consumption was 54.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14163.60 ms. Allocated memory was 176.2 MB in the beginning and 465.6 MB in the end (delta: 289.4 MB). Free memory was 131.4 MB in the beginning and 254.5 MB in the end (delta: -123.1 MB). Peak memory consumption was 166.3 MB. Max. memory is 16.1 GB. * Witness Printer took 163.10 ms. Allocated memory is still 465.6 MB. Free memory was 254.5 MB in the beginning and 239.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 486]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((((a16 == 6 && a17 <= 0) && !(a7 == 1)) && 15 <= a8) || ((a16 <= 5 && !(a7 == 1)) && a8 <= 13)) || (((a16 == 6 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || (((a16 == 6 && a17 <= 0) && a20 == 1) && a8 <= 13)) || (((a16 <= 5 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || ((a20 == 1 && !(a7 == 1)) && a8 <= 13)) || ((a17 <= 0 && a20 == 1) && !(a7 == 1))) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || (a16 <= 5 && a17 <= 0)) || ((a16 <= 5 && a20 == 1) && a8 <= 13) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((((a16 == 6 && a17 <= 0) && !(a7 == 1)) && 15 <= a8) || ((a16 <= 5 && !(a7 == 1)) && a8 <= 13)) || (((a16 == 6 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || (((a16 == 6 && a17 <= 0) && a20 == 1) && a8 <= 13)) || (((a16 <= 5 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || ((a20 == 1 && !(a7 == 1)) && a8 <= 13)) || ((a17 <= 0 && a20 == 1) && !(a7 == 1))) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || (a16 <= 5 && a17 <= 0)) || ((a16 <= 5 && a20 == 1) && a8 <= 13) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.4s, OverallIterations: 13, TraceHistogramMax: 6, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 616 SDtfs, 999 SDslu, 71 SDs, 0 SdLazy, 3179 SolverSat, 774 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1839 GetRequests, 1801 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1281occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 1136 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 50 NumberOfFragments, 267 HoareAnnotationTreeSize, 3 FomulaSimplifications, 15862 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 398 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 2846 NumberOfCodeBlocks, 2846 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 3723 ConstructedInterpolants, 0 QuantifiedInterpolants, 2905686 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1917 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 21 InterpolantComputations, 17 PerfectInterpolantSequences, 3886/4368 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...