./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.06.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.06.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P --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 bbfdf3f22061e77485b28b33d06a9820d2c4b7aa22afc378a1743c2d746b69df --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 22:50:27,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 22:50:27,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 22:50:27,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 22:50:27,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 22:50:27,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 22:50:27,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 22:50:27,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 22:50:27,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 22:50:27,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 22:50:27,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 22:50:27,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 22:50:27,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 22:50:27,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 22:50:27,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 22:50:27,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 22:50:27,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 22:50:27,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 22:50:27,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 22:50:27,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 22:50:27,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 22:50:27,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 22:50:27,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 22:50:27,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 22:50:27,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 22:50:27,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 22:50:27,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 22:50:27,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 22:50:27,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 22:50:27,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 22:50:27,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 22:50:27,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 22:50:27,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 22:50:27,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 22:50:27,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 22:50:27,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 22:50:27,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 22:50:27,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 22:50:27,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 22:50:27,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 22:50:27,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 22:50:27,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 22:50:27,973 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 22:50:27,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 22:50:27,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 22:50:27,974 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 22:50:27,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 22:50:27,975 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 22:50:27,976 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 22:50:27,976 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 22:50:27,976 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 22:50:27,976 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 22:50:27,977 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 22:50:27,978 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 22:50:27,978 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 22:50:27,978 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 22:50:27,978 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 22:50:27,979 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 22:50:27,979 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 22:50:27,979 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 22:50:27,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 22:50:27,981 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 22:50:27,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 22:50:27,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 22:50:27,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 22:50:27,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 22:50:27,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 22:50:27,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 22:50:27,983 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 22:50:27,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 22:50:27,984 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 22:50:27,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 22:50:27,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 22:50:27,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 22:50:27,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:50:27,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 22:50:27,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 22:50:27,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 22:50:27,986 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 22:50:27,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 22:50:27,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 22:50:27,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 22:50:27,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 22:50:27,987 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_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbfdf3f22061e77485b28b33d06a9820d2c4b7aa22afc378a1743c2d746b69df [2021-11-20 22:50:28,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 22:50:28,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 22:50:28,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 22:50:28,303 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 22:50:28,306 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 22:50:28,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/systemc/transmitter.06.cil.c [2021-11-20 22:50:28,397 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/data/57bf51d2e/fa8bd3f47f3449cc9d2a1272e6d056b7/FLAG27c1e8b44 [2021-11-20 22:50:28,897 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 22:50:28,897 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/sv-benchmarks/c/systemc/transmitter.06.cil.c [2021-11-20 22:50:28,909 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/data/57bf51d2e/fa8bd3f47f3449cc9d2a1272e6d056b7/FLAG27c1e8b44 [2021-11-20 22:50:29,350 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/data/57bf51d2e/fa8bd3f47f3449cc9d2a1272e6d056b7 [2021-11-20 22:50:29,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 22:50:29,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 22:50:29,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 22:50:29,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 22:50:29,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 22:50:29,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:50:29" (1/1) ... [2021-11-20 22:50:29,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed87eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:29, skipping insertion in model container [2021-11-20 22:50:29,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:50:29" (1/1) ... [2021-11-20 22:50:29,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 22:50:29,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 22:50:29,619 WARN L230 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_1c799d99-9793-4937-b300-fc50de814bfa/sv-benchmarks/c/systemc/transmitter.06.cil.c[706,719] [2021-11-20 22:50:29,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:50:29,769 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 22:50:29,780 WARN L230 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_1c799d99-9793-4937-b300-fc50de814bfa/sv-benchmarks/c/systemc/transmitter.06.cil.c[706,719] [2021-11-20 22:50:29,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:50:29,869 INFO L208 MainTranslator]: Completed translation [2021-11-20 22:50:29,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:29 WrapperNode [2021-11-20 22:50:29,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 22:50:29,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 22:50:29,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 22:50:29,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 22:50:29,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:29" (1/1) ... [2021-11-20 22:50:29,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:29" (1/1) ... [2021-11-20 22:50:29,935 INFO L137 Inliner]: procedures = 40, calls = 48, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 492 [2021-11-20 22:50:29,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 22:50:29,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 22:50:29,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 22:50:29,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 22:50:29,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:29" (1/1) ... [2021-11-20 22:50:29,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:29" (1/1) ... [2021-11-20 22:50:29,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:29" (1/1) ... [2021-11-20 22:50:29,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:29" (1/1) ... [2021-11-20 22:50:29,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:29" (1/1) ... [2021-11-20 22:50:29,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:29" (1/1) ... [2021-11-20 22:50:29,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:29" (1/1) ... [2021-11-20 22:50:29,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 22:50:29,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 22:50:29,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 22:50:29,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 22:50:29,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:29" (1/1) ... [2021-11-20 22:50:29,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:50:30,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:50:30,015 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 22:50:30,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 22:50:30,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 22:50:30,069 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-20 22:50:30,069 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-20 22:50:30,069 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-20 22:50:30,069 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-20 22:50:30,069 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-20 22:50:30,070 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-20 22:50:30,070 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-20 22:50:30,070 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-20 22:50:30,070 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-20 22:50:30,070 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-20 22:50:30,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 22:50:30,070 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-20 22:50:30,071 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-20 22:50:30,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 22:50:30,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 22:50:30,164 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 22:50:30,165 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 22:50:30,729 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 22:50:30,989 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 22:50:30,990 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-20 22:50:30,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:30 BoogieIcfgContainer [2021-11-20 22:50:30,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 22:50:30,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 22:50:30,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 22:50:30,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 22:50:30,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:50:29" (1/3) ... [2021-11-20 22:50:31,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc5be38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:50:30, skipping insertion in model container [2021-11-20 22:50:31,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:29" (2/3) ... [2021-11-20 22:50:31,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc5be38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:50:31, skipping insertion in model container [2021-11-20 22:50:31,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:30" (3/3) ... [2021-11-20 22:50:31,002 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.06.cil.c [2021-11-20 22:50:31,008 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 22:50:31,009 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 22:50:31,086 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 22:50:31,092 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 22:50:31,092 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 22:50:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 93 states have (on average 1.5376344086021505) internal successors, (143), 95 states have internal predecessors, (143), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-20 22:50:31,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-20 22:50:31,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:31,126 INFO L514 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] [2021-11-20 22:50:31,126 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:50:31,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:31,131 INFO L85 PathProgramCache]: Analyzing trace with hash 826952206, now seen corresponding path program 1 times [2021-11-20 22:50:31,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:31,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845238370] [2021-11-20 22:50:31,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:31,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:31,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:31,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845238370] [2021-11-20 22:50:31,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845238370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:31,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:31,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:50:31,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003482547] [2021-11-20 22:50:31,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:31,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:50:31,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:31,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:50:31,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:50:31,447 INFO L87 Difference]: Start difference. First operand has 120 states, 93 states have (on average 1.5376344086021505) internal successors, (143), 95 states have internal predecessors, (143), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:31,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:31,856 INFO L93 Difference]: Finished difference Result 343 states and 533 transitions. [2021-11-20 22:50:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:50:31,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2021-11-20 22:50:31,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:31,892 INFO L225 Difference]: With dead ends: 343 [2021-11-20 22:50:31,892 INFO L226 Difference]: Without dead ends: 224 [2021-11-20 22:50:31,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:50:31,901 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 301 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:31,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 462 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 22:50:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-20 22:50:31,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2021-11-20 22:50:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 175 states have (on average 1.4628571428571429) internal successors, (256), 176 states have internal predecessors, (256), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-20 22:50:32,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 322 transitions. [2021-11-20 22:50:32,006 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 322 transitions. Word has length 53 [2021-11-20 22:50:32,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:32,007 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 322 transitions. [2021-11-20 22:50:32,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:32,008 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 322 transitions. [2021-11-20 22:50:32,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-20 22:50:32,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:32,014 INFO L514 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] [2021-11-20 22:50:32,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 22:50:32,015 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:50:32,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:32,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1569484785, now seen corresponding path program 1 times [2021-11-20 22:50:32,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:32,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278033319] [2021-11-20 22:50:32,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:32,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:32,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:32,210 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:32,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278033319] [2021-11-20 22:50:32,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278033319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:32,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:32,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 22:50:32,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144376052] [2021-11-20 22:50:32,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:32,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:50:32,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:32,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:50:32,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:50:32,216 INFO L87 Difference]: Start difference. First operand 221 states and 322 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:32,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:32,791 INFO L93 Difference]: Finished difference Result 748 states and 1099 transitions. [2021-11-20 22:50:32,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 22:50:32,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2021-11-20 22:50:32,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:32,807 INFO L225 Difference]: With dead ends: 748 [2021-11-20 22:50:32,807 INFO L226 Difference]: Without dead ends: 512 [2021-11-20 22:50:32,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 22:50:32,816 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 604 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:32,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 739 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 22:50:32,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-11-20 22:50:32,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 500. [2021-11-20 22:50:32,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 407 states have (on average 1.457002457002457) internal successors, (593), 403 states have internal predecessors, (593), 64 states have call successors, (64), 26 states have call predecessors, (64), 28 states have return successors, (71), 71 states have call predecessors, (71), 64 states have call successors, (71) [2021-11-20 22:50:32,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 728 transitions. [2021-11-20 22:50:32,885 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 728 transitions. Word has length 53 [2021-11-20 22:50:32,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:32,885 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 728 transitions. [2021-11-20 22:50:32,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:32,886 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 728 transitions. [2021-11-20 22:50:32,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-20 22:50:32,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:32,888 INFO L514 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] [2021-11-20 22:50:32,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 22:50:32,889 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:50:32,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:32,890 INFO L85 PathProgramCache]: Analyzing trace with hash -444224816, now seen corresponding path program 1 times [2021-11-20 22:50:32,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:32,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691671891] [2021-11-20 22:50:32,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:32,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:32,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:32,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691671891] [2021-11-20 22:50:32,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691671891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:32,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:32,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 22:50:32,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108998110] [2021-11-20 22:50:32,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:32,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:50:32,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:32,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:50:32,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:50:32,973 INFO L87 Difference]: Start difference. First operand 500 states and 728 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:33,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:33,461 INFO L93 Difference]: Finished difference Result 1731 states and 2549 transitions. [2021-11-20 22:50:33,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 22:50:33,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2021-11-20 22:50:33,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:33,472 INFO L225 Difference]: With dead ends: 1731 [2021-11-20 22:50:33,472 INFO L226 Difference]: Without dead ends: 1199 [2021-11-20 22:50:33,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 22:50:33,476 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 604 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:33,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 606 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 22:50:33,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2021-11-20 22:50:33,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 939. [2021-11-20 22:50:33,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 766 states have (on average 1.4556135770234986) internal successors, (1115), 763 states have internal predecessors, (1115), 116 states have call successors, (116), 50 states have call predecessors, (116), 56 states have return successors, (136), 126 states have call predecessors, (136), 116 states have call successors, (136) [2021-11-20 22:50:33,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1367 transitions. [2021-11-20 22:50:33,551 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1367 transitions. Word has length 53 [2021-11-20 22:50:33,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:33,551 INFO L470 AbstractCegarLoop]: Abstraction has 939 states and 1367 transitions. [2021-11-20 22:50:33,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:33,552 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1367 transitions. [2021-11-20 22:50:33,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-20 22:50:33,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:33,560 INFO L514 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] [2021-11-20 22:50:33,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 22:50:33,561 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:50:33,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:33,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2072875089, now seen corresponding path program 1 times [2021-11-20 22:50:33,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:33,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538626009] [2021-11-20 22:50:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:33,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:33,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:33,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538626009] [2021-11-20 22:50:33,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538626009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:33,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:33,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 22:50:33,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114786813] [2021-11-20 22:50:33,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:33,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:50:33,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:33,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:50:33,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:50:33,690 INFO L87 Difference]: Start difference. First operand 939 states and 1367 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:34,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:34,160 INFO L93 Difference]: Finished difference Result 3186 states and 4702 transitions. [2021-11-20 22:50:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 22:50:34,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2021-11-20 22:50:34,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:34,179 INFO L225 Difference]: With dead ends: 3186 [2021-11-20 22:50:34,179 INFO L226 Difference]: Without dead ends: 2182 [2021-11-20 22:50:34,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 22:50:34,185 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 604 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:34,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 606 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 22:50:34,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2021-11-20 22:50:34,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 1791. [2021-11-20 22:50:34,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1462 states have (on average 1.4521203830369358) internal successors, (2123), 1463 states have internal predecessors, (2123), 216 states have call successors, (216), 98 states have call predecessors, (216), 112 states have return successors, (260), 230 states have call predecessors, (260), 216 states have call successors, (260) [2021-11-20 22:50:34,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2599 transitions. [2021-11-20 22:50:34,315 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2599 transitions. Word has length 53 [2021-11-20 22:50:34,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:34,315 INFO L470 AbstractCegarLoop]: Abstraction has 1791 states and 2599 transitions. [2021-11-20 22:50:34,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2599 transitions. [2021-11-20 22:50:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-20 22:50:34,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:34,317 INFO L514 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] [2021-11-20 22:50:34,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 22:50:34,317 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:50:34,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:34,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1913653198, now seen corresponding path program 1 times [2021-11-20 22:50:34,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:34,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499529827] [2021-11-20 22:50:34,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:34,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:34,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:34,423 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:34,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499529827] [2021-11-20 22:50:34,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499529827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:34,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:34,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 22:50:34,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426667004] [2021-11-20 22:50:34,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:34,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:50:34,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:34,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:50:34,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:50:34,425 INFO L87 Difference]: Start difference. First operand 1791 states and 2599 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:34,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:34,959 INFO L93 Difference]: Finished difference Result 5440 states and 7938 transitions. [2021-11-20 22:50:34,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 22:50:34,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2021-11-20 22:50:34,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:34,989 INFO L225 Difference]: With dead ends: 5440 [2021-11-20 22:50:34,990 INFO L226 Difference]: Without dead ends: 3655 [2021-11-20 22:50:34,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-20 22:50:34,998 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 562 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:34,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 513 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 22:50:35,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2021-11-20 22:50:35,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 2991. [2021-11-20 22:50:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2470 states have (on average 1.4392712550607287) internal successors, (3555), 2471 states have internal predecessors, (3555), 328 states have call successors, (328), 164 states have call predecessors, (328), 192 states have return successors, (416), 356 states have call predecessors, (416), 328 states have call successors, (416) [2021-11-20 22:50:35,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 4299 transitions. [2021-11-20 22:50:35,235 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 4299 transitions. Word has length 53 [2021-11-20 22:50:35,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:35,235 INFO L470 AbstractCegarLoop]: Abstraction has 2991 states and 4299 transitions. [2021-11-20 22:50:35,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:35,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 4299 transitions. [2021-11-20 22:50:35,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-20 22:50:35,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:35,237 INFO L514 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] [2021-11-20 22:50:35,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 22:50:35,238 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:50:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:35,239 INFO L85 PathProgramCache]: Analyzing trace with hash -195505164, now seen corresponding path program 1 times [2021-11-20 22:50:35,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:35,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167296775] [2021-11-20 22:50:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:35,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:35,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:35,317 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:35,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167296775] [2021-11-20 22:50:35,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167296775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:35,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:35,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 22:50:35,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394142464] [2021-11-20 22:50:35,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:35,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:50:35,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:35,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:50:35,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:50:35,320 INFO L87 Difference]: Start difference. First operand 2991 states and 4299 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:36,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:36,001 INFO L93 Difference]: Finished difference Result 10691 states and 15446 transitions. [2021-11-20 22:50:36,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 22:50:36,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2021-11-20 22:50:36,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:36,061 INFO L225 Difference]: With dead ends: 10691 [2021-11-20 22:50:36,062 INFO L226 Difference]: Without dead ends: 7706 [2021-11-20 22:50:36,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-20 22:50:36,076 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 607 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:36,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 390 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 22:50:36,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7706 states. [2021-11-20 22:50:36,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7706 to 5820. [2021-11-20 22:50:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5820 states, 4807 states have (on average 1.4302059496567505) internal successors, (6875), 4810 states have internal predecessors, (6875), 628 states have call successors, (628), 328 states have call predecessors, (628), 384 states have return successors, (790), 682 states have call predecessors, (790), 628 states have call successors, (790) [2021-11-20 22:50:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5820 states to 5820 states and 8293 transitions. [2021-11-20 22:50:36,616 INFO L78 Accepts]: Start accepts. Automaton has 5820 states and 8293 transitions. Word has length 54 [2021-11-20 22:50:36,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:36,617 INFO L470 AbstractCegarLoop]: Abstraction has 5820 states and 8293 transitions. [2021-11-20 22:50:36,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:36,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5820 states and 8293 transitions. [2021-11-20 22:50:36,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 22:50:36,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:36,620 INFO L514 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] [2021-11-20 22:50:36,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 22:50:36,620 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:50:36,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:36,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2029129317, now seen corresponding path program 1 times [2021-11-20 22:50:36,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:36,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394328336] [2021-11-20 22:50:36,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:36,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:36,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:36,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394328336] [2021-11-20 22:50:36,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394328336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:36,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:36,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 22:50:36,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447812112] [2021-11-20 22:50:36,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:36,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:50:36,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:36,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:50:36,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:50:36,737 INFO L87 Difference]: Start difference. First operand 5820 states and 8293 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:37,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:37,594 INFO L93 Difference]: Finished difference Result 16236 states and 23285 transitions. [2021-11-20 22:50:37,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 22:50:37,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2021-11-20 22:50:37,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:37,673 INFO L225 Difference]: With dead ends: 16236 [2021-11-20 22:50:37,673 INFO L226 Difference]: Without dead ends: 10422 [2021-11-20 22:50:37,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-20 22:50:37,695 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 526 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:37,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 421 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 22:50:37,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10422 states. [2021-11-20 22:50:38,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10422 to 8636. [2021-11-20 22:50:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8636 states, 7123 states have (on average 1.4217324161168048) internal successors, (10127), 7116 states have internal predecessors, (10127), 936 states have call successors, (936), 496 states have call predecessors, (936), 576 states have return successors, (1160), 1024 states have call predecessors, (1160), 936 states have call successors, (1160) [2021-11-20 22:50:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8636 states to 8636 states and 12223 transitions. [2021-11-20 22:50:38,469 INFO L78 Accepts]: Start accepts. Automaton has 8636 states and 12223 transitions. Word has length 55 [2021-11-20 22:50:38,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:38,470 INFO L470 AbstractCegarLoop]: Abstraction has 8636 states and 12223 transitions. [2021-11-20 22:50:38,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:38,471 INFO L276 IsEmpty]: Start isEmpty. Operand 8636 states and 12223 transitions. [2021-11-20 22:50:38,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-20 22:50:38,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:38,473 INFO L514 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] [2021-11-20 22:50:38,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 22:50:38,473 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:50:38,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:38,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1834519152, now seen corresponding path program 1 times [2021-11-20 22:50:38,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:38,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927002088] [2021-11-20 22:50:38,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:38,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:38,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:38,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927002088] [2021-11-20 22:50:38,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927002088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:38,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:38,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 22:50:38,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526908601] [2021-11-20 22:50:38,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:38,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:50:38,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:38,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:50:38,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:50:38,557 INFO L87 Difference]: Start difference. First operand 8636 states and 12223 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:39,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:39,824 INFO L93 Difference]: Finished difference Result 23610 states and 33653 transitions. [2021-11-20 22:50:39,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 22:50:39,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2021-11-20 22:50:39,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:39,935 INFO L225 Difference]: With dead ends: 23610 [2021-11-20 22:50:39,936 INFO L226 Difference]: Without dead ends: 14980 [2021-11-20 22:50:39,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-20 22:50:39,973 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 485 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:39,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 498 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 22:50:39,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14980 states. [2021-11-20 22:50:40,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14980 to 12866. [2021-11-20 22:50:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12866 states, 10601 states have (on average 1.4129799075558909) internal successors, (14979), 10574 states have internal predecessors, (14979), 1400 states have call successors, (1400), 752 states have call predecessors, (1400), 864 states have return successors, (1704), 1540 states have call predecessors, (1704), 1400 states have call successors, (1704) [2021-11-20 22:50:41,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12866 states to 12866 states and 18083 transitions. [2021-11-20 22:50:41,017 INFO L78 Accepts]: Start accepts. Automaton has 12866 states and 18083 transitions. Word has length 56 [2021-11-20 22:50:41,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:41,018 INFO L470 AbstractCegarLoop]: Abstraction has 12866 states and 18083 transitions. [2021-11-20 22:50:41,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:41,018 INFO L276 IsEmpty]: Start isEmpty. Operand 12866 states and 18083 transitions. [2021-11-20 22:50:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-20 22:50:41,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:41,020 INFO L514 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] [2021-11-20 22:50:41,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 22:50:41,020 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:50:41,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:41,021 INFO L85 PathProgramCache]: Analyzing trace with hash -926859063, now seen corresponding path program 1 times [2021-11-20 22:50:41,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:41,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001350003] [2021-11-20 22:50:41,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:41,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:41,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:41,139 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:41,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001350003] [2021-11-20 22:50:41,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001350003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:41,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:41,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 22:50:41,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988804081] [2021-11-20 22:50:41,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:41,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:50:41,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:41,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:50:41,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:50:41,142 INFO L87 Difference]: Start difference. First operand 12866 states and 18083 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:43,226 INFO L93 Difference]: Finished difference Result 41998 states and 59370 transitions. [2021-11-20 22:50:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 22:50:43,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2021-11-20 22:50:43,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:43,454 INFO L225 Difference]: With dead ends: 41998 [2021-11-20 22:50:43,455 INFO L226 Difference]: Without dead ends: 29138 [2021-11-20 22:50:43,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-20 22:50:43,498 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 497 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:43,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 377 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 22:50:43,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29138 states. [2021-11-20 22:50:45,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29138 to 24944. [2021-11-20 22:50:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24944 states, 20559 states have (on average 1.402548762099324) internal successors, (28835), 20520 states have internal predecessors, (28835), 2676 states have call successors, (2676), 1492 states have call predecessors, (2676), 1708 states have return successors, (3220), 2932 states have call predecessors, (3220), 2676 states have call successors, (3220) [2021-11-20 22:50:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24944 states to 24944 states and 34731 transitions. [2021-11-20 22:50:45,295 INFO L78 Accepts]: Start accepts. Automaton has 24944 states and 34731 transitions. Word has length 57 [2021-11-20 22:50:45,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:45,296 INFO L470 AbstractCegarLoop]: Abstraction has 24944 states and 34731 transitions. [2021-11-20 22:50:45,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:45,296 INFO L276 IsEmpty]: Start isEmpty. Operand 24944 states and 34731 transitions. [2021-11-20 22:50:45,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-20 22:50:45,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:45,299 INFO L514 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] [2021-11-20 22:50:45,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 22:50:45,299 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:50:45,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:45,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1870733524, now seen corresponding path program 1 times [2021-11-20 22:50:45,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:45,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199984345] [2021-11-20 22:50:45,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:45,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:45,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:45,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199984345] [2021-11-20 22:50:45,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199984345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:45,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:45,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 22:50:45,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421038727] [2021-11-20 22:50:45,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:45,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:50:45,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:45,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:50:45,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:50:45,394 INFO L87 Difference]: Start difference. First operand 24944 states and 34731 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:47,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:47,775 INFO L93 Difference]: Finished difference Result 65216 states and 91339 transitions. [2021-11-20 22:50:47,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 22:50:47,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2021-11-20 22:50:47,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:47,983 INFO L225 Difference]: With dead ends: 65216 [2021-11-20 22:50:47,983 INFO L226 Difference]: Without dead ends: 40278 [2021-11-20 22:50:48,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-20 22:50:48,066 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 457 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:48,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 391 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 22:50:48,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40278 states. [2021-11-20 22:50:50,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40278 to 37268. [2021-11-20 22:50:50,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37268 states, 30729 states have (on average 1.3940251879332226) internal successors, (42837), 30642 states have internal predecessors, (42837), 3992 states have call successors, (3992), 2256 states have call predecessors, (3992), 2546 states have return successors, (4706), 4370 states have call predecessors, (4706), 3992 states have call successors, (4706) [2021-11-20 22:50:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37268 states to 37268 states and 51535 transitions. [2021-11-20 22:50:50,690 INFO L78 Accepts]: Start accepts. Automaton has 37268 states and 51535 transitions. Word has length 58 [2021-11-20 22:50:50,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:50,691 INFO L470 AbstractCegarLoop]: Abstraction has 37268 states and 51535 transitions. [2021-11-20 22:50:50,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 22:50:50,692 INFO L276 IsEmpty]: Start isEmpty. Operand 37268 states and 51535 transitions. [2021-11-20 22:50:50,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-20 22:50:50,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:50,696 INFO L514 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] [2021-11-20 22:50:50,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 22:50:50,696 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:50:50,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:50,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1727083731, now seen corresponding path program 1 times [2021-11-20 22:50:50,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:50,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981113116] [2021-11-20 22:50:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:50,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:50,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:50,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981113116] [2021-11-20 22:50:50,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981113116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:50,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:50,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:50:50,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551109441] [2021-11-20 22:50:50,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:50,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:50:50,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:50,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:50:50,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:50:50,751 INFO L87 Difference]: Start difference. First operand 37268 states and 51535 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-20 22:50:54,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:54,635 INFO L93 Difference]: Finished difference Result 110819 states and 155169 transitions. [2021-11-20 22:50:54,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:50:54,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 59 [2021-11-20 22:50:54,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:54,960 INFO L225 Difference]: With dead ends: 110819 [2021-11-20 22:50:54,960 INFO L226 Difference]: Without dead ends: 73556 [2021-11-20 22:50:55,064 INFO L932 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 [2021-11-20 22:50:55,065 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 140 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:55,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 286 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:50:55,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73556 states. [2021-11-20 22:50:59,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73556 to 73168. [2021-11-20 22:50:59,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73168 states, 60095 states have (on average 1.370613195773359) internal successors, (82367), 59920 states have internal predecessors, (82367), 7980 states have call successors, (7980), 4512 states have call predecessors, (7980), 5092 states have return successors, (9408), 8736 states have call predecessors, (9408), 7980 states have call successors, (9408) [2021-11-20 22:51:00,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73168 states to 73168 states and 99755 transitions. [2021-11-20 22:51:00,188 INFO L78 Accepts]: Start accepts. Automaton has 73168 states and 99755 transitions. Word has length 59 [2021-11-20 22:51:00,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:00,188 INFO L470 AbstractCegarLoop]: Abstraction has 73168 states and 99755 transitions. [2021-11-20 22:51:00,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-20 22:51:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 73168 states and 99755 transitions. [2021-11-20 22:51:00,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 22:51:00,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:00,221 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:00,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 22:51:00,222 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:51:00,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:00,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1993899493, now seen corresponding path program 1 times [2021-11-20 22:51:00,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:00,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156865753] [2021-11-20 22:51:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:00,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 22:51:00,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:00,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156865753] [2021-11-20 22:51:00,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156865753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:00,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:00,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:51:00,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915431839] [2021-11-20 22:51:00,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:00,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:51:00,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:00,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:51:00,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:51:00,303 INFO L87 Difference]: Start difference. First operand 73168 states and 99755 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 22:51:04,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:04,873 INFO L93 Difference]: Finished difference Result 138542 states and 192062 transitions. [2021-11-20 22:51:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:51:04,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 81 [2021-11-20 22:51:04,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:05,300 INFO L225 Difference]: With dead ends: 138542 [2021-11-20 22:51:05,300 INFO L226 Difference]: Without dead ends: 94692 [2021-11-20 22:51:05,438 INFO L932 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 [2021-11-20 22:51:05,439 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 105 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:05,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 396 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 22:51:05,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94692 states. [2021-11-20 22:51:09,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94692 to 76078. [2021-11-20 22:51:09,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76078 states, 62999 states have (on average 1.3873077350434133) internal successors, (87399), 62912 states have internal predecessors, (87399), 8072 states have call successors, (8072), 4716 states have call predecessors, (8072), 5006 states have return successors, (8786), 8450 states have call predecessors, (8786), 8072 states have call successors, (8786) [2021-11-20 22:51:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76078 states to 76078 states and 104257 transitions. [2021-11-20 22:51:10,080 INFO L78 Accepts]: Start accepts. Automaton has 76078 states and 104257 transitions. Word has length 81 [2021-11-20 22:51:10,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:10,081 INFO L470 AbstractCegarLoop]: Abstraction has 76078 states and 104257 transitions. [2021-11-20 22:51:10,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 22:51:10,082 INFO L276 IsEmpty]: Start isEmpty. Operand 76078 states and 104257 transitions. [2021-11-20 22:51:10,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-20 22:51:10,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:10,176 INFO L514 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, 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] [2021-11-20 22:51:10,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 22:51:10,177 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:51:10,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:10,178 INFO L85 PathProgramCache]: Analyzing trace with hash -673793847, now seen corresponding path program 1 times [2021-11-20 22:51:10,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:10,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711276950] [2021-11-20 22:51:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:10,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:10,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:10,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711276950] [2021-11-20 22:51:10,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711276950] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:51:10,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258845508] [2021-11-20 22:51:10,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:10,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:51:10,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:51:10,277 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:51:10,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c799d99-9793-4937-b300-fc50de814bfa/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 22:51:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:10,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 22:51:10,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:51:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:10,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 22:51:10,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258845508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:10,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 22:51:10,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-20 22:51:10,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013288518] [2021-11-20 22:51:10,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:10,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:51:10,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:10,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:51:10,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:51:10,778 INFO L87 Difference]: Start difference. First operand 76078 states and 104257 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 22:51:15,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:15,517 INFO L93 Difference]: Finished difference Result 146470 states and 202453 transitions. [2021-11-20 22:51:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:51:15,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 115 [2021-11-20 22:51:15,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:16,028 INFO L225 Difference]: With dead ends: 146470 [2021-11-20 22:51:16,029 INFO L226 Difference]: Without dead ends: 95062 [2021-11-20 22:51:16,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:51:16,133 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 96 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:16,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 388 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]