./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label41.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/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_27b22fd9-88a5-4d5a-beda-d64cfc44658c/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label41.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/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_27b22fd9-88a5-4d5a-beda-d64cfc44658c/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 4b4d92197dfffdd027bb5d3ff3dbfa8e4eded7a5 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:31:02,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:31:02,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:31:02,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:31:02,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:31:02,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:31:02,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:31:02,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:31:02,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:31:02,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:31:02,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:31:02,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:31:02,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:31:02,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:31:02,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:31:02,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:31:02,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:31:02,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:31:02,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:31:02,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:31:02,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:31:02,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:31:02,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:31:02,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:31:02,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:31:02,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:31:02,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:31:02,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:31:02,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:31:02,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:31:02,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:31:02,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:31:02,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:31:02,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:31:02,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:31:02,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:31:02,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:31:02,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:31:02,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:31:02,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:31:02,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:31:02,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:31:02,939 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:31:02,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:31:02,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:31:02,941 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:31:02,941 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:31:02,942 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:31:02,942 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:31:02,942 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:31:02,948 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:31:02,948 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:31:02,949 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:31:02,950 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:31:02,950 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:31:02,950 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:31:02,950 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:31:02,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:31:02,951 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:31:02,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:31:02,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:31:02,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:31:02,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:31:02,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:31:02,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:31:02,953 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:31:02,953 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:31:02,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:31:02,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:31:02,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:31:02,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:31:02,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:31:02,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:02,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:31:02,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:31:02,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:31:02,955 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:31:02,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:31:02,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:31:02,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:31:02,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:31:02,956 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_27b22fd9-88a5-4d5a-beda-d64cfc44658c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b4d92197dfffdd027bb5d3ff3dbfa8e4eded7a5 [2021-10-11 02:31:03,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:31:03,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:31:03,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:31:03,302 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:31:03,302 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:31:03,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem02_label41.c [2021-10-11 02:31:03,378 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/bin/utaipan-WLngWcDbfI/data/a30211d47/20bc9c5052ae4f019701fab13608d7ef/FLAG6e15e0126 [2021-10-11 02:31:04,035 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:31:04,036 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/sv-benchmarks/c/eca-rers2012/Problem02_label41.c [2021-10-11 02:31:04,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/bin/utaipan-WLngWcDbfI/data/a30211d47/20bc9c5052ae4f019701fab13608d7ef/FLAG6e15e0126 [2021-10-11 02:31:04,313 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/bin/utaipan-WLngWcDbfI/data/a30211d47/20bc9c5052ae4f019701fab13608d7ef [2021-10-11 02:31:04,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:31:04,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:31:04,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:04,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:31:04,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:31:04,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:04" (1/1) ... [2021-10-11 02:31:04,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8c6fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:04, skipping insertion in model container [2021-10-11 02:31:04,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:04" (1/1) ... [2021-10-11 02:31:04,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:31:04,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:04,744 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_27b22fd9-88a5-4d5a-beda-d64cfc44658c/sv-benchmarks/c/eca-rers2012/Problem02_label41.c[15650,15663] [2021-10-11 02:31:04,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:04,814 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:31:04,893 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_27b22fd9-88a5-4d5a-beda-d64cfc44658c/sv-benchmarks/c/eca-rers2012/Problem02_label41.c[15650,15663] [2021-10-11 02:31:04,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:04,924 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:31:04,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:04 WrapperNode [2021-10-11 02:31:04,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:04,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:04,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:31:04,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:31:04,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:04" (1/1) ... [2021-10-11 02:31:04,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:04" (1/1) ... [2021-10-11 02:31:04,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:04,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:31:04,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:31:05,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:31:05,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:04" (1/1) ... [2021-10-11 02:31:05,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:04" (1/1) ... [2021-10-11 02:31:05,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:04" (1/1) ... [2021-10-11 02:31:05,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:04" (1/1) ... [2021-10-11 02:31:05,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:04" (1/1) ... [2021-10-11 02:31:05,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:04" (1/1) ... [2021-10-11 02:31:05,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:04" (1/1) ... [2021-10-11 02:31:05,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:31:05,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:31:05,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:31:05,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:31:05,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:04" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/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 02:31:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:31:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:31:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:31:05,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:31:07,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:31:07,228 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:31:07,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:07 BoogieIcfgContainer [2021-10-11 02:31:07,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:31:07,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:31:07,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:31:07,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:31:07,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:31:04" (1/3) ... [2021-10-11 02:31:07,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3099661e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:07, skipping insertion in model container [2021-10-11 02:31:07,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:04" (2/3) ... [2021-10-11 02:31:07,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3099661e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:07, skipping insertion in model container [2021-10-11 02:31:07,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:07" (3/3) ... [2021-10-11 02:31:07,246 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label41.c [2021-10-11 02:31:07,261 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:31:07,265 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:31:07,278 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:31:07,317 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:31:07,317 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:31:07,317 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:31:07,317 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:31:07,317 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:31:07,317 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:31:07,318 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:31:07,318 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:31:07,334 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-10-11 02:31:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:31:07,344 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:07,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:07,345 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:07,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:07,351 INFO L82 PathProgramCache]: Analyzing trace with hash 925942086, now seen corresponding path program 1 times [2021-10-11 02:31:07,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:07,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888410435] [2021-10-11 02:31:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:07,764 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 02:31:07,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888410435] [2021-10-11 02:31:07,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:07,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:07,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865029023] [2021-10-11 02:31:07,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:07,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:07,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:07,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:07,785 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-10-11 02:31:08,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:08,288 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-11 02:31:08,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:08,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:31:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:08,317 INFO L225 Difference]: With dead ends: 251 [2021-10-11 02:31:08,317 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:31:08,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:08,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:31:08,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:31:08,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:31:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2021-10-11 02:31:08,374 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2021-10-11 02:31:08,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:08,375 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2021-10-11 02:31:08,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:08,376 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2021-10-11 02:31:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-11 02:31:08,380 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:08,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:08,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:31:08,380 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:08,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:08,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1028662843, now seen corresponding path program 1 times [2021-10-11 02:31:08,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:08,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836798987] [2021-10-11 02:31:08,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:08,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836798987] [2021-10-11 02:31:08,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:08,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:08,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009599542] [2021-10-11 02:31:08,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:08,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:08,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:08,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:08,480 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2021-10-11 02:31:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:08,938 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2021-10-11 02:31:08,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:08,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2021-10-11 02:31:08,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:08,947 INFO L225 Difference]: With dead ends: 485 [2021-10-11 02:31:08,947 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:31:08,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:08,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:31:08,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-11 02:31:08,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:31:08,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2021-10-11 02:31:08,994 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2021-10-11 02:31:08,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:08,995 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2021-10-11 02:31:08,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:08,996 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2021-10-11 02:31:09,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-11 02:31:09,002 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:09,003 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:09,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:31:09,003 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:09,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:09,005 INFO L82 PathProgramCache]: Analyzing trace with hash 2137912724, now seen corresponding path program 1 times [2021-10-11 02:31:09,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:09,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311614011] [2021-10-11 02:31:09,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:09,129 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:09,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311614011] [2021-10-11 02:31:09,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074515255] [2021-10-11 02:31:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/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 02:31:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:09,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:31:09,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:31:09,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:09,525 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:31:09,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:31:09,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:31:09,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233322782] [2021-10-11 02:31:09,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:09,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:09,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:09,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:09,535 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2021-10-11 02:31:09,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:09,992 INFO L93 Difference]: Finished difference Result 805 states and 1271 transitions. [2021-10-11 02:31:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:09,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2021-10-11 02:31:09,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:09,998 INFO L225 Difference]: With dead ends: 805 [2021-10-11 02:31:09,998 INFO L226 Difference]: Without dead ends: 483 [2021-10-11 02:31:10,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:10,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-11 02:31:10,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-11 02:31:10,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2021-10-11 02:31:10,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 738 transitions. [2021-10-11 02:31:10,037 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 738 transitions. Word has length 89 [2021-10-11 02:31:10,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:10,040 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 738 transitions. [2021-10-11 02:31:10,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:10,040 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 738 transitions. [2021-10-11 02:31:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-11 02:31:10,048 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:10,048 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:10,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:31:10,276 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:10,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:10,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2138502470, now seen corresponding path program 1 times [2021-10-11 02:31:10,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:10,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844563083] [2021-10-11 02:31:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-11 02:31:10,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844563083] [2021-10-11 02:31:10,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857636928] [2021-10-11 02:31:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/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 02:31:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:10,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:31:10,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:31:10,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:31:10,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:31:10,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:31:10,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167909150] [2021-10-11 02:31:10,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:10,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:10,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:10,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:10,742 INFO L87 Difference]: Start difference. First operand 483 states and 738 transitions. Second operand 3 states. [2021-10-11 02:31:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:11,250 INFO L93 Difference]: Finished difference Result 1205 states and 1881 transitions. [2021-10-11 02:31:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:11,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2021-10-11 02:31:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:11,256 INFO L225 Difference]: With dead ends: 1205 [2021-10-11 02:31:11,256 INFO L226 Difference]: Without dead ends: 723 [2021-10-11 02:31:11,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:11,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-11 02:31:11,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-10-11 02:31:11,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2021-10-11 02:31:11,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1064 transitions. [2021-10-11 02:31:11,275 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1064 transitions. Word has length 103 [2021-10-11 02:31:11,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:11,276 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1064 transitions. [2021-10-11 02:31:11,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:11,276 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1064 transitions. [2021-10-11 02:31:11,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-11 02:31:11,278 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:11,278 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:11,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:31:11,504 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:11,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:11,504 INFO L82 PathProgramCache]: Analyzing trace with hash -502124081, now seen corresponding path program 1 times [2021-10-11 02:31:11,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:11,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458347843] [2021-10-11 02:31:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:11,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458347843] [2021-10-11 02:31:11,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:11,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:11,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234684397] [2021-10-11 02:31:11,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:11,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:11,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:11,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:11,596 INFO L87 Difference]: Start difference. First operand 723 states and 1064 transitions. Second operand 3 states. [2021-10-11 02:31:12,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:12,052 INFO L93 Difference]: Finished difference Result 1605 states and 2377 transitions. [2021-10-11 02:31:12,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:12,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2021-10-11 02:31:12,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:12,058 INFO L225 Difference]: With dead ends: 1605 [2021-10-11 02:31:12,058 INFO L226 Difference]: Without dead ends: 883 [2021-10-11 02:31:12,059 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 02:31:12,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-10-11 02:31:12,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-10-11 02:31:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2021-10-11 02:31:12,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1249 transitions. [2021-10-11 02:31:12,083 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1249 transitions. Word has length 103 [2021-10-11 02:31:12,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:12,083 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1249 transitions. [2021-10-11 02:31:12,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:12,084 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1249 transitions. [2021-10-11 02:31:12,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-11 02:31:12,087 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:12,087 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:31:12,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:31:12,087 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:12,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:12,088 INFO L82 PathProgramCache]: Analyzing trace with hash 972860030, now seen corresponding path program 1 times [2021-10-11 02:31:12,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:12,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306070564] [2021-10-11 02:31:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:12,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306070564] [2021-10-11 02:31:12,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:12,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:12,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873756690] [2021-10-11 02:31:12,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:12,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:12,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:12,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:12,182 INFO L87 Difference]: Start difference. First operand 883 states and 1249 transitions. Second operand 3 states. [2021-10-11 02:31:12,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:12,662 INFO L93 Difference]: Finished difference Result 2325 states and 3303 transitions. [2021-10-11 02:31:12,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:12,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2021-10-11 02:31:12,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:12,671 INFO L225 Difference]: With dead ends: 2325 [2021-10-11 02:31:12,671 INFO L226 Difference]: Without dead ends: 1443 [2021-10-11 02:31:12,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:12,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-10-11 02:31:12,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2021-10-11 02:31:12,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2021-10-11 02:31:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1950 transitions. [2021-10-11 02:31:12,708 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1950 transitions. Word has length 108 [2021-10-11 02:31:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:12,708 INFO L481 AbstractCegarLoop]: Abstraction has 1443 states and 1950 transitions. [2021-10-11 02:31:12,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:12,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1950 transitions. [2021-10-11 02:31:12,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-11 02:31:12,712 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:12,712 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:31:12,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:31:12,713 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:12,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:12,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1229843305, now seen corresponding path program 1 times [2021-10-11 02:31:12,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:12,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222697280] [2021-10-11 02:31:12,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:12,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222697280] [2021-10-11 02:31:12,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:12,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:12,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808459071] [2021-10-11 02:31:12,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:12,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:12,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:12,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:12,772 INFO L87 Difference]: Start difference. First operand 1443 states and 1950 transitions. Second operand 3 states. [2021-10-11 02:31:13,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:13,212 INFO L93 Difference]: Finished difference Result 2885 states and 3899 transitions. [2021-10-11 02:31:13,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:13,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2021-10-11 02:31:13,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:13,220 INFO L225 Difference]: With dead ends: 2885 [2021-10-11 02:31:13,221 INFO L226 Difference]: Without dead ends: 1443 [2021-10-11 02:31:13,223 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 02:31:13,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-10-11 02:31:13,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2021-10-11 02:31:13,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2021-10-11 02:31:13,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1840 transitions. [2021-10-11 02:31:13,255 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1840 transitions. Word has length 113 [2021-10-11 02:31:13,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:13,256 INFO L481 AbstractCegarLoop]: Abstraction has 1443 states and 1840 transitions. [2021-10-11 02:31:13,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:13,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1840 transitions. [2021-10-11 02:31:13,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-11 02:31:13,259 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:13,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-11 02:31:13,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:31:13,260 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:13,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:13,261 INFO L82 PathProgramCache]: Analyzing trace with hash -917641716, now seen corresponding path program 1 times [2021-10-11 02:31:13,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:13,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71875599] [2021-10-11 02:31:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:13,326 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:13,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71875599] [2021-10-11 02:31:13,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:13,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:13,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269692498] [2021-10-11 02:31:13,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:13,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:13,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:13,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:13,334 INFO L87 Difference]: Start difference. First operand 1443 states and 1840 transitions. Second operand 3 states. [2021-10-11 02:31:13,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:13,866 INFO L93 Difference]: Finished difference Result 3845 states and 4906 transitions. [2021-10-11 02:31:13,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:13,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2021-10-11 02:31:13,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:13,881 INFO L225 Difference]: With dead ends: 3845 [2021-10-11 02:31:13,881 INFO L226 Difference]: Without dead ends: 2403 [2021-10-11 02:31:13,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:13,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2021-10-11 02:31:13,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2403. [2021-10-11 02:31:13,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2021-10-11 02:31:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 2969 transitions. [2021-10-11 02:31:13,945 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 2969 transitions. Word has length 113 [2021-10-11 02:31:13,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:13,946 INFO L481 AbstractCegarLoop]: Abstraction has 2403 states and 2969 transitions. [2021-10-11 02:31:13,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:13,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 2969 transitions. [2021-10-11 02:31:13,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-11 02:31:13,952 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:13,952 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:31:13,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:31:13,953 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:13,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:13,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1236699785, now seen corresponding path program 1 times [2021-10-11 02:31:13,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:13,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108064150] [2021-10-11 02:31:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-11 02:31:14,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108064150] [2021-10-11 02:31:14,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698975479] [2021-10-11 02:31:14,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/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 02:31:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:14,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:31:14,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:31:14,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:31:14,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:31:14,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2021-10-11 02:31:14,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943646112] [2021-10-11 02:31:14,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:14,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:14,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:14,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:14,520 INFO L87 Difference]: Start difference. First operand 2403 states and 2969 transitions. Second operand 3 states. [2021-10-11 02:31:14,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:14,776 INFO L93 Difference]: Finished difference Result 4405 states and 5422 transitions. [2021-10-11 02:31:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:14,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2021-10-11 02:31:14,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:14,787 INFO L225 Difference]: With dead ends: 4405 [2021-10-11 02:31:14,787 INFO L226 Difference]: Without dead ends: 1923 [2021-10-11 02:31:14,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:14,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2021-10-11 02:31:14,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1923. [2021-10-11 02:31:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1923 states. [2021-10-11 02:31:14,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2274 transitions. [2021-10-11 02:31:14,834 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2274 transitions. Word has length 132 [2021-10-11 02:31:14,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:14,834 INFO L481 AbstractCegarLoop]: Abstraction has 1923 states and 2274 transitions. [2021-10-11 02:31:14,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:14,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2274 transitions. [2021-10-11 02:31:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-10-11 02:31:14,839 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:14,839 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:31:15,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:31:15,064 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:15,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:15,064 INFO L82 PathProgramCache]: Analyzing trace with hash 144681733, now seen corresponding path program 1 times [2021-10-11 02:31:15,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:15,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920325734] [2021-10-11 02:31:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-11 02:31:15,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920325734] [2021-10-11 02:31:15,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:15,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:15,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039630589] [2021-10-11 02:31:15,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:15,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:15,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:15,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:15,142 INFO L87 Difference]: Start difference. First operand 1923 states and 2274 transitions. Second operand 3 states. [2021-10-11 02:31:15,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:15,493 INFO L93 Difference]: Finished difference Result 3605 states and 4294 transitions. [2021-10-11 02:31:15,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:15,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2021-10-11 02:31:15,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:15,503 INFO L225 Difference]: With dead ends: 3605 [2021-10-11 02:31:15,503 INFO L226 Difference]: Without dead ends: 1763 [2021-10-11 02:31:15,505 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 02:31:15,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-10-11 02:31:15,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1763. [2021-10-11 02:31:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2021-10-11 02:31:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2074 transitions. [2021-10-11 02:31:15,593 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2074 transitions. Word has length 137 [2021-10-11 02:31:15,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:15,594 INFO L481 AbstractCegarLoop]: Abstraction has 1763 states and 2074 transitions. [2021-10-11 02:31:15,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:15,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2074 transitions. [2021-10-11 02:31:15,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-10-11 02:31:15,598 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:15,598 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:15,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:31:15,599 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:15,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:15,599 INFO L82 PathProgramCache]: Analyzing trace with hash -720437847, now seen corresponding path program 1 times [2021-10-11 02:31:15,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:15,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013768782] [2021-10-11 02:31:15,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-11 02:31:15,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013768782] [2021-10-11 02:31:15,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:15,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:15,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135866302] [2021-10-11 02:31:15,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:15,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:15,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:15,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:15,667 INFO L87 Difference]: Start difference. First operand 1763 states and 2074 transitions. Second operand 3 states. [2021-10-11 02:31:16,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:16,037 INFO L93 Difference]: Finished difference Result 2805 states and 3312 transitions. [2021-10-11 02:31:16,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:16,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2021-10-11 02:31:16,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:16,046 INFO L225 Difference]: With dead ends: 2805 [2021-10-11 02:31:16,046 INFO L226 Difference]: Without dead ends: 1603 [2021-10-11 02:31:16,048 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 02:31:16,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2021-10-11 02:31:16,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1603. [2021-10-11 02:31:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1603 states. [2021-10-11 02:31:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 1852 transitions. [2021-10-11 02:31:16,085 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 1852 transitions. Word has length 148 [2021-10-11 02:31:16,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:16,086 INFO L481 AbstractCegarLoop]: Abstraction has 1603 states and 1852 transitions. [2021-10-11 02:31:16,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:16,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 1852 transitions. [2021-10-11 02:31:16,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-10-11 02:31:16,091 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:16,091 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-11 02:31:16,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:31:16,092 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:16,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:16,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1312563473, now seen corresponding path program 1 times [2021-10-11 02:31:16,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:16,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732636195] [2021-10-11 02:31:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-11 02:31:16,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732636195] [2021-10-11 02:31:16,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:16,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:31:16,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448796816] [2021-10-11 02:31:16,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:31:16,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:16,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:31:16,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:16,335 INFO L87 Difference]: Start difference. First operand 1603 states and 1852 transitions. Second operand 5 states. [2021-10-11 02:31:17,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:17,145 INFO L93 Difference]: Finished difference Result 3253 states and 3755 transitions. [2021-10-11 02:31:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:31:17,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2021-10-11 02:31:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:17,152 INFO L225 Difference]: With dead ends: 3253 [2021-10-11 02:31:17,152 INFO L226 Difference]: Without dead ends: 1159 [2021-10-11 02:31:17,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:31:17,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2021-10-11 02:31:17,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1043. [2021-10-11 02:31:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2021-10-11 02:31:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1145 transitions. [2021-10-11 02:31:17,209 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1145 transitions. Word has length 196 [2021-10-11 02:31:17,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:17,209 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1145 transitions. [2021-10-11 02:31:17,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:31:17,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1145 transitions. [2021-10-11 02:31:17,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-10-11 02:31:17,214 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:17,214 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:17,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:31:17,215 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:17,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:17,215 INFO L82 PathProgramCache]: Analyzing trace with hash -864613231, now seen corresponding path program 1 times [2021-10-11 02:31:17,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:17,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624938767] [2021-10-11 02:31:17,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-11 02:31:17,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624938767] [2021-10-11 02:31:17,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:17,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:31:17,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744193074] [2021-10-11 02:31:17,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:31:17,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:17,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:31:17,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:31:17,373 INFO L87 Difference]: Start difference. First operand 1043 states and 1145 transitions. Second operand 4 states. [2021-10-11 02:31:17,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:17,807 INFO L93 Difference]: Finished difference Result 2005 states and 2206 transitions. [2021-10-11 02:31:17,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:31:17,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 206 [2021-10-11 02:31:17,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:17,813 INFO L225 Difference]: With dead ends: 2005 [2021-10-11 02:31:17,813 INFO L226 Difference]: Without dead ends: 1043 [2021-10-11 02:31:17,815 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 02:31:17,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-10-11 02:31:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2021-10-11 02:31:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2021-10-11 02:31:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1139 transitions. [2021-10-11 02:31:17,840 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1139 transitions. Word has length 206 [2021-10-11 02:31:17,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:17,840 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1139 transitions. [2021-10-11 02:31:17,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:31:17,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1139 transitions. [2021-10-11 02:31:17,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-10-11 02:31:17,847 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:17,847 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:17,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:31:17,848 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:17,848 INFO L82 PathProgramCache]: Analyzing trace with hash -423647387, now seen corresponding path program 1 times [2021-10-11 02:31:17,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:17,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271676064] [2021-10-11 02:31:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 146 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:18,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271676064] [2021-10-11 02:31:18,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420328050] [2021-10-11 02:31:18,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/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 02:31:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:18,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:31:18,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 190 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:18,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 190 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:19,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [813308422] [2021-10-11 02:31:19,115 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2021-10-11 02:31:19,116 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:31:19,121 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:31:19,127 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:31:19,127 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:31:26,580 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:31:26,696 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:31:26,844 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:31:26,995 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:31:27,177 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:31:27,292 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:31:27,432 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:31:27,536 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:31:27,647 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:31:27,752 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-10-11 02:31:27,886 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-10-11 02:31:30,155 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 137 [2021-10-11 02:31:33,344 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-10-11 02:31:33,474 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-10-11 02:31:33,644 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-10-11 02:31:33,774 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-10-11 02:31:33,949 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-10-11 02:31:34,081 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-10-11 02:31:34,273 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 153 [2021-10-11 02:31:34,404 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-10-11 02:31:34,551 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-10-11 02:31:34,685 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-10-11 02:31:39,468 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11 [2021-10-11 02:31:39,529 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11 [2021-10-11 02:31:39,666 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11 [2021-10-11 02:31:42,997 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:31:43,481 WARN L197 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 93 [2021-10-11 02:31:43,811 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 96 [2021-10-11 02:31:44,198 WARN L197 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 102 [2021-10-11 02:31:44,694 WARN L197 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 107 [2021-10-11 02:31:45,061 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2021-10-11 02:31:45,504 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2021-10-11 02:31:45,715 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-10-11 02:31:46,059 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2021-10-11 02:31:48,233 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2021-10-11 02:31:53,750 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:31:53,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:31:53,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-10-11 02:31:53,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768493441] [2021-10-11 02:31:53,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:31:53,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:53,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:31:53,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-11 02:31:53,753 INFO L87 Difference]: Start difference. First operand 1043 states and 1139 transitions. Second operand 9 states. [2021-10-11 02:31:54,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:54,961 INFO L93 Difference]: Finished difference Result 1964 states and 2143 transitions. [2021-10-11 02:31:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:31:54,962 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 213 [2021-10-11 02:31:54,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:54,962 INFO L225 Difference]: With dead ends: 1964 [2021-10-11 02:31:54,962 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:31:54,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 446 SyntacticMatches, 180 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2244 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-10-11 02:31:54,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:31:54,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:31:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:31:54,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:31:54,966 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 213 [2021-10-11 02:31:54,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:54,966 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:31:54,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:31:54,966 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:31:54,966 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:31:55,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:31:55,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:31:55,428 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2021-10-11 02:31:55,607 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2021-10-11 02:31:55,609 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-11 02:31:55,609 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-11 02:31:55,609 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-11 02:31:55,610 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-11 02:31:55,610 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-11 02:31:55,610 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-11 02:31:55,610 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-11 02:31:55,610 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-11 02:31:55,610 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-11 02:31:55,610 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-11 02:31:55,610 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-11 02:31:55,610 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-11 02:31:55,610 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-11 02:31:55,610 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-11 02:31:55,610 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-11 02:31:55,610 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-11 02:31:55,610 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-11 02:31:55,610 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-11 02:31:55,611 INFO L262 CegarLoopResult]: For program point L448-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:31:55,611 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-11 02:31:55,611 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-11 02:31:55,611 INFO L262 CegarLoopResult]: For program point L451-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:31:55,611 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-11 02:31:55,611 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-11 02:31:55,611 INFO L262 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2021-10-11 02:31:55,611 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-11 02:31:55,611 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-11 02:31:55,611 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-11 02:31:55,611 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-11 02:31:55,611 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:31:55,611 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-11 02:31:55,612 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-11 02:31:55,612 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-11 02:31:55,612 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-11 02:31:55,612 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-11 02:31:55,612 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-11 02:31:55,612 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-11 02:31:55,612 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-11 02:31:55,612 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-11 02:31:55,612 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 452) no Hoare annotation was computed. [2021-10-11 02:31:55,612 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-11 02:31:55,612 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-11 02:31:55,612 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-11 02:31:55,612 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-11 02:31:55,612 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-11 02:31:55,613 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-11 02:31:55,613 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-11 02:31:55,613 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-11 02:31:55,613 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-11 02:31:55,613 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-11 02:31:55,613 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-11 02:31:55,613 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-11 02:31:55,613 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-11 02:31:55,613 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-11 02:31:55,613 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-11 02:31:55,613 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-11 02:31:55,614 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse6 (<= ~a28~0 9)) (.cse2 (= ~a17~0 8)) (.cse5 (<= 9 ~a28~0)) (.cse7 (<= ~a17~0 7)) (.cse10 (<= ~a28~0 10)) (.cse3 (= ~a25~0 1)) (.cse0 (= ~a19~0 1)) (.cse8 (= ~a25~0 0)) (.cse1 (= ~a21~0 1)) (.cse4 (not (= ~a11~0 1))) (.cse11 (<= ~a17~0 8)) (.cse9 (= ~a28~0 10))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse3 .cse6 .cse7) (and .cse8 .cse1 .cse2 .cse6) (and .cse1 .cse2 .cse3 .cse4 .cse9) (and .cse5 .cse0 .cse1 .cse2 .cse3 .cse10) (and .cse5 .cse8 .cse7 .cse10) (and (= ~a25~0 ~a11~0) .cse0 .cse3 (<= ~a28~0 7) .cse11) (and .cse0 .cse8 .cse1 .cse4 .cse11 .cse9))) [2021-10-11 02:31:55,614 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-11 02:31:55,614 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-11 02:31:55,614 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-11 02:31:55,614 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 02:31:55,614 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-11 02:31:55,614 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-11 02:31:55,614 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-11 02:31:55,614 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-11 02:31:55,614 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:31:55,614 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-11 02:31:55,614 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-11 02:31:55,615 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse6 (<= ~a28~0 9)) (.cse2 (= ~a17~0 8)) (.cse5 (<= 9 ~a28~0)) (.cse7 (<= ~a17~0 7)) (.cse10 (<= ~a28~0 10)) (.cse3 (= ~a25~0 1)) (.cse0 (= ~a19~0 1)) (.cse8 (= ~a25~0 0)) (.cse1 (= ~a21~0 1)) (.cse4 (not (= ~a11~0 1))) (.cse11 (<= ~a17~0 8)) (.cse9 (= ~a28~0 10))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse3 .cse6 .cse7) (and .cse8 .cse1 .cse2 .cse6) (and .cse1 .cse2 .cse3 .cse4 .cse9) (and .cse5 .cse0 .cse1 .cse2 .cse3 .cse10) (and .cse5 .cse8 .cse7 .cse10) (and (= ~a25~0 ~a11~0) .cse0 .cse3 (<= ~a28~0 7) .cse11) (and .cse0 .cse8 .cse1 .cse4 .cse11 .cse9))) [2021-10-11 02:31:55,615 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-11 02:31:55,615 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-11 02:31:55,615 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-11 02:31:55,615 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-11 02:31:55,615 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-11 02:31:55,615 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-11 02:31:55,615 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-11 02:31:55,615 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-11 02:31:55,615 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-11 02:31:55,615 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-11 02:31:55,616 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-11 02:31:55,616 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-11 02:31:55,616 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-11 02:31:55,616 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-11 02:31:55,616 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-11 02:31:55,616 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-11 02:31:55,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:31:55 BoogieIcfgContainer [2021-10-11 02:31:55,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:31:55,638 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:31:55,638 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:31:55,638 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:31:55,639 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:07" (3/4) ... [2021-10-11 02:31:55,642 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:31:55,668 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-11 02:31:55,680 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-11 02:31:55,681 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:31:55,683 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:31:55,795 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b22fd9-88a5-4d5a-beda-d64cfc44658c/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:31:55,795 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:31:55,796 INFO L168 Benchmark]: Toolchain (without parser) took 51479.11 ms. Allocated memory was 146.8 MB in the beginning and 866.1 MB in the end (delta: 719.3 MB). Free memory was 113.0 MB in the beginning and 734.1 MB in the end (delta: -621.2 MB). Peak memory consumption was 97.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:55,797 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:55,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.15 ms. Allocated memory is still 146.8 MB. Free memory was 112.6 MB in the beginning and 106.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:55,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.41 ms. Allocated memory is still 146.8 MB. Free memory was 106.6 MB in the beginning and 101.3 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:55,798 INFO L168 Benchmark]: Boogie Preprocessor took 77.44 ms. Allocated memory is still 146.8 MB. Free memory was 101.3 MB in the beginning and 97.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:55,798 INFO L168 Benchmark]: RCFGBuilder took 2158.08 ms. Allocated memory was 146.8 MB in the beginning and 195.0 MB in the end (delta: 48.2 MB). Free memory was 97.2 MB in the beginning and 103.1 MB in the end (delta: -6.0 MB). Peak memory consumption was 62.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:55,798 INFO L168 Benchmark]: TraceAbstraction took 48398.70 ms. Allocated memory was 195.0 MB in the beginning and 866.1 MB in the end (delta: 671.1 MB). Free memory was 103.1 MB in the beginning and 749.8 MB in the end (delta: -646.7 MB). Peak memory consumption was 464.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:55,799 INFO L168 Benchmark]: Witness Printer took 157.30 ms. Allocated memory is still 866.1 MB. Free memory was 749.8 MB in the beginning and 734.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:55,801 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 96.5 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 592.15 ms. Allocated memory is still 146.8 MB. Free memory was 112.6 MB in the beginning and 106.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.41 ms. Allocated memory is still 146.8 MB. Free memory was 106.6 MB in the beginning and 101.3 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.44 ms. Allocated memory is still 146.8 MB. Free memory was 101.3 MB in the beginning and 97.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2158.08 ms. Allocated memory was 146.8 MB in the beginning and 195.0 MB in the end (delta: 48.2 MB). Free memory was 97.2 MB in the beginning and 103.1 MB in the end (delta: -6.0 MB). Peak memory consumption was 62.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 48398.70 ms. Allocated memory was 195.0 MB in the beginning and 866.1 MB in the end (delta: 671.1 MB). Free memory was 103.1 MB in the beginning and 749.8 MB in the end (delta: -646.7 MB). Peak memory consumption was 464.8 MB. Max. memory is 16.1 GB. * Witness Printer took 157.30 ms. Allocated memory is still 866.1 MB. Free memory was 749.8 MB in the beginning and 734.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 452]: 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: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1)) || (((9 <= a28 && a25 == 1) && a28 <= 9) && a17 <= 7)) || (((a25 == 0 && a21 == 1) && a17 == 8) && a28 <= 9)) || ((((a21 == 1 && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 == 10)) || (((((9 <= a28 && a19 == 1) && a21 == 1) && a17 == 8) && a25 == 1) && a28 <= 10)) || (((9 <= a28 && a25 == 0) && a17 <= 7) && a28 <= 10)) || ((((a25 == a11 && a19 == 1) && a25 == 1) && a28 <= 7) && a17 <= 8)) || (((((a19 == 1 && a25 == 0) && a21 == 1) && !(a11 == 1)) && a17 <= 8) && a28 == 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1)) || (((9 <= a28 && a25 == 1) && a28 <= 9) && a17 <= 7)) || (((a25 == 0 && a21 == 1) && a17 == 8) && a28 <= 9)) || ((((a21 == 1 && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 == 10)) || (((((9 <= a28 && a19 == 1) && a21 == 1) && a17 == 8) && a25 == 1) && a28 <= 10)) || (((9 <= a28 && a25 == 0) && a17 <= 7) && a28 <= 10)) || ((((a25 == a11 && a19 == 1) && a25 == 1) && a28 <= 7) && a17 <= 8)) || (((((a19 == 1 && a25 == 0) && a21 == 1) && !(a11 == 1)) && a17 <= 8) && a28 == 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 47.8s, OverallIterations: 14, TraceHistogramMax: 5, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 974 SDtfs, 1349 SDslu, 123 SDs, 0 SdLazy, 4327 SolverSat, 764 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1329 GetRequests, 1100 SyntacticMatches, 183 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2246 ImplicationChecksByTransitivity, 11.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2403occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 116 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 86 NumberOfFragments, 259 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3547 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 266 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 2362 NumberOfCodeBlocks, 2362 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 2877 ConstructedInterpolants, 0 QuantifiedInterpolants, 1580160 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1194 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 22 InterpolantComputations, 16 PerfectInterpolantSequences, 1614/1823 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...