./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.10.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3805a420-444e-4d1e-8b27-17ac409b8eb6/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3805a420-444e-4d1e-8b27-17ac409b8eb6/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3805a420-444e-4d1e-8b27-17ac409b8eb6/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3805a420-444e-4d1e-8b27-17ac409b8eb6/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.10.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3805a420-444e-4d1e-8b27-17ac409b8eb6/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3805a420-444e-4d1e-8b27-17ac409b8eb6/bin/utaipan-ByfvJB40ur --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 c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:38:55,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:38:55,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:38:55,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:38:55,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:38:55,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:38:55,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:38:55,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:38:55,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:38:55,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:38:55,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:38:55,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:38:55,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:38:55,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:38:55,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:38:55,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:38:55,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:38:55,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:38:55,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:38:55,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:38:55,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:38:55,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:38:55,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:38:55,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:38:55,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:38:55,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:38:55,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:38:55,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:38:55,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:38:55,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:38:55,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:38:55,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:38:55,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:38:55,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:38:55,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:38:55,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:38:55,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:38:55,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:38:55,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:38:55,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:38:55,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:38:55,996 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3805a420-444e-4d1e-8b27-17ac409b8eb6/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:38:56,018 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:38:56,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:38:56,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:38:56,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:38:56,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:38:56,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:38:56,021 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:38:56,021 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:38:56,021 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:38:56,021 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:38:56,022 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:38:56,022 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:38:56,022 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:38:56,022 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:38:56,023 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:38:56,023 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:38:56,023 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:38:56,023 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:38:56,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:38:56,024 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:38:56,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:38:56,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:38:56,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:38:56,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:38:56,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:38:56,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:38:56,026 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:38:56,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:38:56,027 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:38:56,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:38:56,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:38:56,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:38:56,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:38:56,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:38:56,028 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:38:56,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:38:56,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:38:56,029 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:38:56,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:38:56,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:38:56,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:38:56,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_3805a420-444e-4d1e-8b27-17ac409b8eb6/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3805a420-444e-4d1e-8b27-17ac409b8eb6/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 [2022-11-26 00:38:56,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:38:56,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:38:56,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:38:56,349 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:38:56,350 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:38:56,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3805a420-444e-4d1e-8b27-17ac409b8eb6/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/systemc/transmitter.10.cil.c [2022-11-26 00:38:59,299 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:38:59,560 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:38:59,561 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3805a420-444e-4d1e-8b27-17ac409b8eb6/sv-benchmarks/c/systemc/transmitter.10.cil.c [2022-11-26 00:38:59,577 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3805a420-444e-4d1e-8b27-17ac409b8eb6/bin/utaipan-ByfvJB40ur/data/95d9aa4a4/e73301a19fb343c49ac975228e7c526b/FLAGa4c788eb8 [2022-11-26 00:38:59,591 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3805a420-444e-4d1e-8b27-17ac409b8eb6/bin/utaipan-ByfvJB40ur/data/95d9aa4a4/e73301a19fb343c49ac975228e7c526b [2022-11-26 00:38:59,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:38:59,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:38:59,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:38:59,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:38:59,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:38:59,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:38:59" (1/1) ... [2022-11-26 00:38:59,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522362f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:38:59, skipping insertion in model container [2022-11-26 00:38:59,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:38:59" (1/1) ... [2022-11-26 00:38:59,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:38:59,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:38:59,822 WARN L237 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_3805a420-444e-4d1e-8b27-17ac409b8eb6/sv-benchmarks/c/systemc/transmitter.10.cil.c[706,719] [2022-11-26 00:39:00,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:39:00,031 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:39:00,040 WARN L237 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_3805a420-444e-4d1e-8b27-17ac409b8eb6/sv-benchmarks/c/systemc/transmitter.10.cil.c[706,719] [2022-11-26 00:39:00,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:39:00,122 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:39:00,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:00 WrapperNode [2022-11-26 00:39:00,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:39:00,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:39:00,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:39:00,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:39:00,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:00" (1/1) ... [2022-11-26 00:39:00,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:00" (1/1) ... [2022-11-26 00:39:00,190 INFO L138 Inliner]: procedures = 48, calls = 60, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 720 [2022-11-26 00:39:00,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:39:00,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:39:00,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:39:00,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:39:00,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:00" (1/1) ... [2022-11-26 00:39:00,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:00" (1/1) ... [2022-11-26 00:39:00,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:00" (1/1) ... [2022-11-26 00:39:00,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:00" (1/1) ... [2022-11-26 00:39:00,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:00" (1/1) ... [2022-11-26 00:39:00,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:00" (1/1) ... [2022-11-26 00:39:00,231 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:00" (1/1) ... [2022-11-26 00:39:00,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:00" (1/1) ... [2022-11-26 00:39:00,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:39:00,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:39:00,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:39:00,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:39:00,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:00" (1/1) ... [2022-11-26 00:39:00,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:39:00,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3805a420-444e-4d1e-8b27-17ac409b8eb6/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:39:00,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3805a420-444e-4d1e-8b27-17ac409b8eb6/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:39:00,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3805a420-444e-4d1e-8b27-17ac409b8eb6/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:39:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:39:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-26 00:39:00,352 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-26 00:39:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-26 00:39:00,353 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-26 00:39:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-26 00:39:00,353 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-26 00:39:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-26 00:39:00,354 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-26 00:39:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-26 00:39:00,354 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-26 00:39:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:39:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-26 00:39:00,354 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-26 00:39:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:39:00,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:39:00,462 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:39:00,465 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:39:01,303 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:39:01,782 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:39:01,782 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-26 00:39:01,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:39:01 BoogieIcfgContainer [2022-11-26 00:39:01,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:39:01,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:39:01,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:39:01,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:39:01,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:38:59" (1/3) ... [2022-11-26 00:39:01,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d5b20dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:39:01, skipping insertion in model container [2022-11-26 00:39:01,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:39:00" (2/3) ... [2022-11-26 00:39:01,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d5b20dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:39:01, skipping insertion in model container [2022-11-26 00:39:01,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:39:01" (3/3) ... [2022-11-26 00:39:01,799 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.10.cil.c [2022-11-26 00:39:01,819 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:39:01,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:39:01,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:39:01,892 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b6b1ed1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:39:01,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:39:01,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 133 states have (on average 1.556390977443609) internal successors, (207), 135 states have internal predecessors, (207), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-26 00:39:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-26 00:39:01,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:01,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:01,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:39:01,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash 128064639, now seen corresponding path program 1 times [2022-11-26 00:39:01,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:01,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232235868] [2022-11-26 00:39:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:01,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:02,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:02,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:02,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232235868] [2022-11-26 00:39:02,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232235868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:02,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:02,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:39:02,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788651716] [2022-11-26 00:39:02,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:02,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:39:02,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:02,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:39:02,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:39:02,463 INFO L87 Difference]: Start difference. First operand has 164 states, 133 states have (on average 1.556390977443609) internal successors, (207), 135 states have internal predecessors, (207), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-11-26 00:39:02,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:02,872 INFO L93 Difference]: Finished difference Result 475 states and 757 transitions. [2022-11-26 00:39:02,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:39:02,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 69 [2022-11-26 00:39:02,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:02,885 INFO L225 Difference]: With dead ends: 475 [2022-11-26 00:39:02,885 INFO L226 Difference]: Without dead ends: 312 [2022-11-26 00:39:02,890 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:39:02,894 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 433 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:02,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 686 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:39:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-26 00:39:02,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 309. [2022-11-26 00:39:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 255 states have (on average 1.5058823529411764) internal successors, (384), 256 states have internal predecessors, (384), 41 states have call successors, (41), 12 states have call predecessors, (41), 12 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-26 00:39:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 466 transitions. [2022-11-26 00:39:03,008 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 466 transitions. Word has length 69 [2022-11-26 00:39:03,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:03,010 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 466 transitions. [2022-11-26 00:39:03,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-11-26 00:39:03,010 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 466 transitions. [2022-11-26 00:39:03,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-26 00:39:03,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:03,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:03,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:39:03,022 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:39:03,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:03,023 INFO L85 PathProgramCache]: Analyzing trace with hash -903266176, now seen corresponding path program 1 times [2022-11-26 00:39:03,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:03,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284606070] [2022-11-26 00:39:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:03,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:03,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:03,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284606070] [2022-11-26 00:39:03,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284606070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:03,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:03,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:39:03,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995420958] [2022-11-26 00:39:03,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:03,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:39:03,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:03,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:39:03,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:39:03,278 INFO L87 Difference]: Start difference. First operand 309 states and 466 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2022-11-26 00:39:03,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:03,980 INFO L93 Difference]: Finished difference Result 1056 states and 1611 transitions. [2022-11-26 00:39:03,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:39:03,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 69 [2022-11-26 00:39:03,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:03,990 INFO L225 Difference]: With dead ends: 1056 [2022-11-26 00:39:03,990 INFO L226 Difference]: Without dead ends: 728 [2022-11-26 00:39:03,997 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:39:04,001 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 908 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:04,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1095 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:39:04,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-26 00:39:04,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 716. [2022-11-26 00:39:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 607 states have (on average 1.4975288303130148) internal successors, (909), 599 states have internal predecessors, (909), 80 states have call successors, (80), 26 states have call predecessors, (80), 28 states have return successors, (91), 91 states have call predecessors, (91), 80 states have call successors, (91) [2022-11-26 00:39:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1080 transitions. [2022-11-26 00:39:04,126 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1080 transitions. Word has length 69 [2022-11-26 00:39:04,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:04,127 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1080 transitions. [2022-11-26 00:39:04,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2022-11-26 00:39:04,127 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1080 transitions. [2022-11-26 00:39:04,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-26 00:39:04,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:04,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:04,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:39:04,129 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:39:04,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:04,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1177044671, now seen corresponding path program 1 times [2022-11-26 00:39:04,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:04,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673480071] [2022-11-26 00:39:04,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:04,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:04,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:04,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673480071] [2022-11-26 00:39:04,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673480071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:04,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:04,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:39:04,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53650255] [2022-11-26 00:39:04,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:04,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:39:04,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:04,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:39:04,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:39:04,352 INFO L87 Difference]: Start difference. First operand 716 states and 1080 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2022-11-26 00:39:05,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:05,053 INFO L93 Difference]: Finished difference Result 2507 states and 3833 transitions. [2022-11-26 00:39:05,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:39:05,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 69 [2022-11-26 00:39:05,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:05,062 INFO L225 Difference]: With dead ends: 2507 [2022-11-26 00:39:05,062 INFO L226 Difference]: Without dead ends: 1751 [2022-11-26 00:39:05,065 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:39:05,066 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 908 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:05,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 902 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:39:05,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2022-11-26 00:39:05,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1363. [2022-11-26 00:39:05,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1158 states have (on average 1.498272884283247) internal successors, (1735), 1151 states have internal predecessors, (1735), 148 states have call successors, (148), 50 states have call predecessors, (148), 56 states have return successors, (180), 162 states have call predecessors, (180), 148 states have call successors, (180) [2022-11-26 00:39:05,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 2063 transitions. [2022-11-26 00:39:05,168 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 2063 transitions. Word has length 69 [2022-11-26 00:39:05,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:05,169 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 2063 transitions. [2022-11-26 00:39:05,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2022-11-26 00:39:05,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 2063 transitions. [2022-11-26 00:39:05,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-26 00:39:05,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:05,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:05,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:39:05,171 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:39:05,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:05,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1387585568, now seen corresponding path program 1 times [2022-11-26 00:39:05,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:05,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072530329] [2022-11-26 00:39:05,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:05,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:05,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:05,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072530329] [2022-11-26 00:39:05,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072530329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:05,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:05,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:39:05,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608032653] [2022-11-26 00:39:05,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:05,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:39:05,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:05,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:39:05,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:39:05,272 INFO L87 Difference]: Start difference. First operand 1363 states and 2063 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-11-26 00:39:05,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:05,792 INFO L93 Difference]: Finished difference Result 4050 states and 6235 transitions. [2022-11-26 00:39:05,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:39:05,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 69 [2022-11-26 00:39:05,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:05,807 INFO L225 Difference]: With dead ends: 4050 [2022-11-26 00:39:05,807 INFO L226 Difference]: Without dead ends: 2692 [2022-11-26 00:39:05,812 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:39:05,813 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 448 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:05,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 684 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:39:05,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2022-11-26 00:39:05,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 2680. [2022-11-26 00:39:06,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2283 states have (on average 1.4883924660534384) internal successors, (3398), 2269 states have internal predecessors, (3398), 284 states have call successors, (284), 100 states have call predecessors, (284), 112 states have return successors, (345), 311 states have call predecessors, (345), 284 states have call successors, (345) [2022-11-26 00:39:06,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 4027 transitions. [2022-11-26 00:39:06,016 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 4027 transitions. Word has length 69 [2022-11-26 00:39:06,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:06,017 INFO L495 AbstractCegarLoop]: Abstraction has 2680 states and 4027 transitions. [2022-11-26 00:39:06,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-11-26 00:39:06,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 4027 transitions. [2022-11-26 00:39:06,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-26 00:39:06,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:06,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:06,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:39:06,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:39:06,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:06,020 INFO L85 PathProgramCache]: Analyzing trace with hash 112482879, now seen corresponding path program 1 times [2022-11-26 00:39:06,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:06,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348172446] [2022-11-26 00:39:06,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:06,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:06,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:06,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348172446] [2022-11-26 00:39:06,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348172446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:06,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:06,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:39:06,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617165368] [2022-11-26 00:39:06,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:06,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:39:06,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:06,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:39:06,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:39:06,161 INFO L87 Difference]: Start difference. First operand 2680 states and 4027 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-11-26 00:39:06,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:06,863 INFO L93 Difference]: Finished difference Result 7973 states and 12179 transitions. [2022-11-26 00:39:06,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:39:06,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 69 [2022-11-26 00:39:06,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:06,901 INFO L225 Difference]: With dead ends: 7973 [2022-11-26 00:39:06,903 INFO L226 Difference]: Without dead ends: 5298 [2022-11-26 00:39:06,914 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:39:06,917 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 454 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:06,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 684 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:39:06,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5298 states. [2022-11-26 00:39:07,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5298 to 5276. [2022-11-26 00:39:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5276 states, 4503 states have (on average 1.4779036198090163) internal successors, (6655), 4476 states have internal predecessors, (6655), 548 states have call successors, (548), 200 states have call predecessors, (548), 224 states have return successors, (664), 600 states have call predecessors, (664), 548 states have call successors, (664) [2022-11-26 00:39:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5276 states to 5276 states and 7867 transitions. [2022-11-26 00:39:07,321 INFO L78 Accepts]: Start accepts. Automaton has 5276 states and 7867 transitions. Word has length 69 [2022-11-26 00:39:07,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:07,322 INFO L495 AbstractCegarLoop]: Abstraction has 5276 states and 7867 transitions. [2022-11-26 00:39:07,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-11-26 00:39:07,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5276 states and 7867 transitions. [2022-11-26 00:39:07,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-26 00:39:07,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:07,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:07,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:39:07,325 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:39:07,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:07,325 INFO L85 PathProgramCache]: Analyzing trace with hash 635803550, now seen corresponding path program 1 times [2022-11-26 00:39:07,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:07,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956194992] [2022-11-26 00:39:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:07,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:07,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:07,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956194992] [2022-11-26 00:39:07,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956194992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:07,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:07,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:39:07,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017233129] [2022-11-26 00:39:07,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:07,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:39:07,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:07,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:39:07,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:39:07,499 INFO L87 Difference]: Start difference. First operand 5276 states and 7867 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2022-11-26 00:39:08,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:08,709 INFO L93 Difference]: Finished difference Result 17809 states and 27018 transitions. [2022-11-26 00:39:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:39:08,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 69 [2022-11-26 00:39:08,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:08,778 INFO L225 Difference]: With dead ends: 17809 [2022-11-26 00:39:08,778 INFO L226 Difference]: Without dead ends: 12210 [2022-11-26 00:39:08,804 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:39:08,806 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 908 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:08,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 902 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:39:08,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12210 states. [2022-11-26 00:39:09,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12210 to 10144. [2022-11-26 00:39:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10144 states, 8651 states have (on average 1.4753207721650676) internal successors, (12763), 8640 states have internal predecessors, (12763), 1044 states have call successors, (1044), 392 states have call predecessors, (1044), 448 states have return successors, (1304), 1112 states have call predecessors, (1304), 1044 states have call successors, (1304) [2022-11-26 00:39:09,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10144 states to 10144 states and 15111 transitions. [2022-11-26 00:39:09,737 INFO L78 Accepts]: Start accepts. Automaton has 10144 states and 15111 transitions. Word has length 69 [2022-11-26 00:39:09,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:09,739 INFO L495 AbstractCegarLoop]: Abstraction has 10144 states and 15111 transitions. [2022-11-26 00:39:09,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2022-11-26 00:39:09,740 INFO L276 IsEmpty]: Start isEmpty. Operand 10144 states and 15111 transitions. [2022-11-26 00:39:09,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-26 00:39:09,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:09,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:09,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:39:09,747 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:39:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1554778173, now seen corresponding path program 1 times [2022-11-26 00:39:09,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:09,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790144003] [2022-11-26 00:39:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:09,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:10,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:10,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:10,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790144003] [2022-11-26 00:39:10,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790144003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:10,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:10,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:39:10,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429941237] [2022-11-26 00:39:10,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:10,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:39:10,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:10,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:39:10,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:39:10,025 INFO L87 Difference]: Start difference. First operand 10144 states and 15111 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-11-26 00:39:11,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:11,979 INFO L93 Difference]: Finished difference Result 31616 states and 47145 transitions. [2022-11-26 00:39:11,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:39:11,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 69 [2022-11-26 00:39:11,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:12,107 INFO L225 Difference]: With dead ends: 31616 [2022-11-26 00:39:12,107 INFO L226 Difference]: Without dead ends: 21478 [2022-11-26 00:39:12,149 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:39:12,150 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 929 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:12,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 611 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:39:12,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21478 states. [2022-11-26 00:39:13,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21478 to 17148. [2022-11-26 00:39:13,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17148 states, 14791 states have (on average 1.4616320735582449) internal successors, (21619), 14768 states have internal predecessors, (21619), 1588 states have call successors, (1588), 656 states have call predecessors, (1588), 768 states have return successors, (2108), 1724 states have call predecessors, (2108), 1588 states have call successors, (2108) [2022-11-26 00:39:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17148 states to 17148 states and 25315 transitions. [2022-11-26 00:39:13,630 INFO L78 Accepts]: Start accepts. Automaton has 17148 states and 25315 transitions. Word has length 69 [2022-11-26 00:39:13,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:13,631 INFO L495 AbstractCegarLoop]: Abstraction has 17148 states and 25315 transitions. [2022-11-26 00:39:13,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-11-26 00:39:13,632 INFO L276 IsEmpty]: Start isEmpty. Operand 17148 states and 25315 transitions. [2022-11-26 00:39:13,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-26 00:39:13,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:13,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:13,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:39:13,635 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:39:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:13,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1973817297, now seen corresponding path program 1 times [2022-11-26 00:39:13,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:13,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644796471] [2022-11-26 00:39:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:13,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:13,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:13,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644796471] [2022-11-26 00:39:13,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644796471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:13,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:13,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:39:13,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334368402] [2022-11-26 00:39:13,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:13,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:39:13,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:13,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:39:13,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:39:13,909 INFO L87 Difference]: Start difference. First operand 17148 states and 25315 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2022-11-26 00:39:17,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:17,477 INFO L93 Difference]: Finished difference Result 63632 states and 94046 transitions. [2022-11-26 00:39:17,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:39:17,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 70 [2022-11-26 00:39:17,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:17,739 INFO L225 Difference]: With dead ends: 63632 [2022-11-26 00:39:17,739 INFO L226 Difference]: Without dead ends: 46490 [2022-11-26 00:39:17,820 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:39:17,822 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 910 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:17,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 682 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:39:17,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46490 states. [2022-11-26 00:39:20,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46490 to 33672. [2022-11-26 00:39:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33672 states, 29059 states have (on average 1.4559000653842182) internal successors, (42307), 29020 states have internal predecessors, (42307), 3076 states have call successors, (3076), 1312 states have call predecessors, (3076), 1536 states have return successors, (4060), 3340 states have call predecessors, (4060), 3076 states have call successors, (4060) [2022-11-26 00:39:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33672 states to 33672 states and 49443 transitions. [2022-11-26 00:39:20,476 INFO L78 Accepts]: Start accepts. Automaton has 33672 states and 49443 transitions. Word has length 70 [2022-11-26 00:39:20,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:20,476 INFO L495 AbstractCegarLoop]: Abstraction has 33672 states and 49443 transitions. [2022-11-26 00:39:20,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2022-11-26 00:39:20,477 INFO L276 IsEmpty]: Start isEmpty. Operand 33672 states and 49443 transitions. [2022-11-26 00:39:20,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-26 00:39:20,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:20,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:20,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:39:20,479 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:39:20,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:20,479 INFO L85 PathProgramCache]: Analyzing trace with hash 996325652, now seen corresponding path program 1 times [2022-11-26 00:39:20,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:20,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507047126] [2022-11-26 00:39:20,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:20,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:20,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:20,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507047126] [2022-11-26 00:39:20,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507047126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:20,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:20,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:39:20,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017662314] [2022-11-26 00:39:20,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:20,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:39:20,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:20,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:39:20,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:39:20,730 INFO L87 Difference]: Start difference. First operand 33672 states and 49443 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2022-11-26 00:39:25,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:25,547 INFO L93 Difference]: Finished difference Result 96636 states and 142253 transitions. [2022-11-26 00:39:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:39:25,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 71 [2022-11-26 00:39:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:25,854 INFO L225 Difference]: With dead ends: 96636 [2022-11-26 00:39:25,854 INFO L226 Difference]: Without dead ends: 62970 [2022-11-26 00:39:25,953 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:39:25,954 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 835 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:25,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 640 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:39:26,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62970 states. [2022-11-26 00:39:29,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62970 to 50072. [2022-11-26 00:39:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50072 states, 43171 states have (on average 1.4510435245882654) internal successors, (62643), 43044 states have internal predecessors, (62643), 4596 states have call successors, (4596), 1984 states have call predecessors, (4596), 2304 states have return successors, (5972), 5044 states have call predecessors, (5972), 4596 states have call successors, (5972) [2022-11-26 00:39:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50072 states to 50072 states and 73211 transitions. [2022-11-26 00:39:29,878 INFO L78 Accepts]: Start accepts. Automaton has 50072 states and 73211 transitions. Word has length 71 [2022-11-26 00:39:29,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:29,879 INFO L495 AbstractCegarLoop]: Abstraction has 50072 states and 73211 transitions. [2022-11-26 00:39:29,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2022-11-26 00:39:29,879 INFO L276 IsEmpty]: Start isEmpty. Operand 50072 states and 73211 transitions. [2022-11-26 00:39:29,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-26 00:39:29,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:29,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:39:29,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:39:29,882 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:39:29,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:29,887 INFO L85 PathProgramCache]: Analyzing trace with hash -447451731, now seen corresponding path program 1 times [2022-11-26 00:39:29,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:29,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857868706] [2022-11-26 00:39:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:29,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:30,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:39:30,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:30,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857868706] [2022-11-26 00:39:30,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857868706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:39:30,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:39:30,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:39:30,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890419914] [2022-11-26 00:39:30,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:39:30,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:39:30,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:30,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:39:30,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:39:30,170 INFO L87 Difference]: Start difference. First operand 50072 states and 73211 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-11-26 00:39:36,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:36,546 INFO L93 Difference]: Finished difference Result 141300 states and 207293 transitions. [2022-11-26 00:39:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:39:36,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 72 [2022-11-26 00:39:36,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:37,090 INFO L225 Difference]: With dead ends: 141300 [2022-11-26 00:39:37,090 INFO L226 Difference]: Without dead ends: 91234 [2022-11-26 00:39:37,236 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:39:37,240 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 770 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:37,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 773 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:39:37,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91234 states. [2022-11-26 00:39:42,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91234 to 74624. [2022-11-26 00:39:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74624 states, 64283 states have (on average 1.4461521708694367) internal successors, (92963), 63980 states have internal predecessors, (92963), 6884 states have call successors, (6884), 3008 states have call predecessors, (6884), 3456 states have return successors, (8772), 7636 states have call predecessors, (8772), 6884 states have call successors, (8772)