./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH --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 43c4691e367ff0d8a9949fa90f15eddbc091ab75ed1546de74dafe83c2376639 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:15:56,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:15:56,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:15:57,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:15:57,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:15:57,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:15:57,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:15:57,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:15:57,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:15:57,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:15:57,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:15:57,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:15:57,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:15:57,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:15:57,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:15:57,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:15:57,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:15:57,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:15:57,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:15:57,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:15:57,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:15:57,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:15:57,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:15:57,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:15:57,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:15:57,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:15:57,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:15:57,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:15:57,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:15:57,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:15:57,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:15:57,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:15:57,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:15:57,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:15:57,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:15:57,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:15:57,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:15:57,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:15:57,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:15:57,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:15:57,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:15:57,075 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:15:57,131 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:15:57,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:15:57,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:15:57,133 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:15:57,133 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:15:57,133 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:15:57,134 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:15:57,134 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:15:57,140 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:15:57,140 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:15:57,140 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:15:57,141 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:15:57,141 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:15:57,141 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:15:57,141 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:15:57,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:15:57,142 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:15:57,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:15:57,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:15:57,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:15:57,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:15:57,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:15:57,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:15:57,144 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:15:57,144 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:15:57,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:15:57,144 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:15:57,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:15:57,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:15:57,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:15:57,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:15:57,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:15:57,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:15:57,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:15:57,146 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:15:57,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:15:57,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:15:57,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:15:57,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:15:57,147 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c4691e367ff0d8a9949fa90f15eddbc091ab75ed1546de74dafe83c2376639 [2021-11-03 04:15:57,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:15:57,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:15:57,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:15:57,445 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:15:57,446 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:15:57,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i [2021-11-03 04:15:57,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/data/93cc1a2e5/12639ddb42ba40ebb64a334838d4588f/FLAGc1f8ff00f [2021-11-03 04:15:58,147 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:15:58,148 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i [2021-11-03 04:15:58,165 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/data/93cc1a2e5/12639ddb42ba40ebb64a334838d4588f/FLAGc1f8ff00f [2021-11-03 04:15:58,431 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/data/93cc1a2e5/12639ddb42ba40ebb64a334838d4588f [2021-11-03 04:15:58,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:15:58,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:15:58,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:58,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:15:58,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:15:58,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:58" (1/1) ... [2021-11-03 04:15:58,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610e0dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:58, skipping insertion in model container [2021-11-03 04:15:58,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:58" (1/1) ... [2021-11-03 04:15:58,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:15:58,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:15:58,674 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-03 04:15:59,022 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47275,47288] [2021-11-03 04:15:59,027 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47463,47476] [2021-11-03 04:15:59,038 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48230,48243] [2021-11-03 04:15:59,040 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48344,48357] [2021-11-03 04:15:59,044 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48781,48794] [2021-11-03 04:15:59,045 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48837,48850] [2021-11-03 04:15:59,052 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49349,49362] [2021-11-03 04:15:59,053 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49408,49421] [2021-11-03 04:15:59,054 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49487,49500] [2021-11-03 04:15:59,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:59,063 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:15:59,075 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-03 04:15:59,100 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47275,47288] [2021-11-03 04:15:59,102 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47463,47476] [2021-11-03 04:15:59,107 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48230,48243] [2021-11-03 04:15:59,108 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48344,48357] [2021-11-03 04:15:59,111 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48781,48794] [2021-11-03 04:15:59,112 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48837,48850] [2021-11-03 04:15:59,116 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49349,49362] [2021-11-03 04:15:59,117 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49408,49421] [2021-11-03 04:15:59,117 WARN L228 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_95599c43-fec0-4da3-828e-45a1babc3bc2/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49487,49500] [2021-11-03 04:15:59,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:59,191 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:15:59,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:59 WrapperNode [2021-11-03 04:15:59,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:59,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:15:59,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:15:59,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:15:59,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:59" (1/1) ... [2021-11-03 04:15:59,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:59" (1/1) ... [2021-11-03 04:15:59,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:15:59,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:15:59,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:15:59,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:15:59,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:59" (1/1) ... [2021-11-03 04:15:59,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:59" (1/1) ... [2021-11-03 04:15:59,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:59" (1/1) ... [2021-11-03 04:15:59,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:59" (1/1) ... [2021-11-03 04:15:59,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:59" (1/1) ... [2021-11-03 04:15:59,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:59" (1/1) ... [2021-11-03 04:15:59,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:59" (1/1) ... [2021-11-03 04:15:59,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:15:59,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:15:59,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:15:59,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:15:59,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:59" (1/1) ... [2021-11-03 04:15:59,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:15:59,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:15:59,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:15:59,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:15:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2021-11-03 04:15:59,419 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2021-11-03 04:15:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:15:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:15:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:15:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 04:15:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 04:15:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:15:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:15:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:15:59,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:15:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:15:59,423 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-03 04:16:00,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:16:00,388 INFO L299 CfgBuilder]: Removed 40 assume(true) statements. [2021-11-03 04:16:00,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:16:00 BoogieIcfgContainer [2021-11-03 04:16:00,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:16:00,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:16:00,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:16:00,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:16:00,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:15:58" (1/3) ... [2021-11-03 04:16:00,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dcaf82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:16:00, skipping insertion in model container [2021-11-03 04:16:00,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:59" (2/3) ... [2021-11-03 04:16:00,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dcaf82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:16:00, skipping insertion in model container [2021-11-03 04:16:00,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:16:00" (3/3) ... [2021-11-03 04:16:00,399 INFO L111 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.i [2021-11-03 04:16:00,405 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-03 04:16:00,405 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:16:00,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-03 04:16:00,406 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-03 04:16:00,462 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,462 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,463 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,464 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,464 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,465 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,465 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,466 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,466 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,467 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,467 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,467 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,472 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,472 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,472 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,472 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,473 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,473 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,473 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,473 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,474 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,474 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,474 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,474 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,474 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,475 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,475 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,475 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,476 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,476 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,476 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,476 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,476 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,477 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,477 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,477 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,477 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,477 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,478 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre30.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,478 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,478 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,478 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,478 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,479 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,479 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre30.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,479 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,479 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,479 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,480 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,480 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,480 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,481 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,481 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,481 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,481 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,482 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,482 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,482 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,482 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,482 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,484 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,485 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,485 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,486 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,489 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,489 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre30.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,490 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,490 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,490 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,491 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,491 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,491 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre30.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,492 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,497 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,497 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,497 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,497 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,498 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,498 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,498 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,498 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,498 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,499 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,499 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,499 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,499 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,499 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,500 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,500 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,500 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,500 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,500 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,501 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,501 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,501 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,501 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,501 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,502 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,502 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,502 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,502 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,502 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,503 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,503 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,503 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,503 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,503 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,503 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,504 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,504 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,504 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,504 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,505 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,505 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,506 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,506 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,506 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,506 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,506 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,507 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,507 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,507 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,507 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,507 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,508 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,508 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,508 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,508 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,508 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,509 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,509 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,509 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,510 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,510 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,510 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,511 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,511 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,513 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,513 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,513 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,514 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,514 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,514 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,514 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,514 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,514 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,515 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,515 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,515 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,515 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,515 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,516 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,516 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,516 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,516 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,516 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,517 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,517 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,517 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,517 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,517 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,517 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,519 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,519 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,519 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,519 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,520 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,520 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,520 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,520 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,520 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,520 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,521 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,521 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,521 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,521 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,522 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,522 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,522 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,522 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,522 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,523 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,523 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,523 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,523 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,523 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,523 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,524 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,524 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,524 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,525 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,530 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,530 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,530 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,531 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,531 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,531 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,531 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,531 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,531 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,532 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,535 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,536 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,536 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,536 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,536 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,536 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,537 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,537 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,537 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,537 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,537 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,537 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,538 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,538 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,538 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,538 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,538 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,539 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,539 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,539 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,539 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,539 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,539 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,540 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,540 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,540 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,540 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,540 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,541 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,541 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,541 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,541 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,542 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,542 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,555 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,555 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,555 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,556 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,556 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,556 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,556 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,556 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,556 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,557 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,557 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,557 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,557 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,558 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,558 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,558 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,558 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,558 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,558 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,559 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,559 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,561 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,561 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,561 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,562 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,562 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre30.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,562 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre30.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,562 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,562 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,562 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre30.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,563 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre30.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,563 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,563 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,563 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,563 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,564 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,564 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,564 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,564 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,564 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,564 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,565 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,565 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,565 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,565 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,565 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,565 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,566 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,566 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,566 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,566 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,566 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,567 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,567 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,567 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,567 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,567 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,567 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,568 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,568 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,568 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,568 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,568 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,568 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,569 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,569 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,569 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,569 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre30.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,569 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre30.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,569 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre30.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,570 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre30.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,570 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,570 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,570 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,571 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,572 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,573 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,573 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,573 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,573 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,573 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,573 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,574 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,574 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,574 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,574 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,574 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,575 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,575 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,575 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,575 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,575 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,575 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,577 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,577 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,577 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,577 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,577 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,578 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,578 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,578 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,578 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,578 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,579 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,579 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,579 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,579 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,579 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,579 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,580 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,580 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,580 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,580 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,580 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,580 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,581 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,581 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,581 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,581 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,582 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,582 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre62| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,582 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,582 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre62| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,582 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,583 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,583 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,583 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,583 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,583 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,583 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,584 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,584 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,584 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,584 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,584 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,585 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,585 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,585 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,585 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,585 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre62| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,585 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre62| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,586 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,586 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,586 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,586 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,586 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,586 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,587 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,587 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,592 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,593 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,593 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,594 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,594 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,594 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,594 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~self.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,595 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,595 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,595 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,595 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,595 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre30.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,596 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,596 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,596 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,596 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,596 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,597 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre30.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,597 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,597 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,597 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,597 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,598 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,598 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,598 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem24.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,598 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,599 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem28.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,599 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,599 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,599 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc25.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,599 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem23.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,600 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,600 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre62| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,600 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem32.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,601 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret26.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,601 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,601 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,601 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_~q~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,601 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem31.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,602 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,602 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,602 WARN L313 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,602 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_node_init_~self.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,603 WARN L313 ript$VariableManager]: TermVariabe pusherThread1of1ForFork0_fifo_push_~t~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 04:16:00,613 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-11-03 04:16:00,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:16:00,676 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:16:00,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-03 04:16:00,710 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-03 04:16:00,721 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 431 places, 459 transitions, 926 flow [2021-11-03 04:16:00,724 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 431 places, 459 transitions, 926 flow [2021-11-03 04:16:00,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 431 places, 459 transitions, 926 flow [2021-11-03 04:16:00,937 INFO L129 PetriNetUnfolder]: 32/458 cut-off events. [2021-11-03 04:16:00,937 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-03 04:16:00,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 458 events. 32/458 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1075 event pairs, 0 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 318. Up to 3 conditions per place. [2021-11-03 04:16:00,975 INFO L116 LiptonReduction]: Number of co-enabled transitions 30960 [2021-11-03 04:16:41,315 WARN L207 SmtUtils]: Spent 5.93 s on a formula simplification. DAG size of input: 253 DAG size of output: 238 [2021-11-03 04:16:49,249 WARN L207 SmtUtils]: Spent 6.60 s on a formula simplification. DAG size of input: 259 DAG size of output: 244 [2021-11-03 04:16:51,841 INFO L131 LiptonReduction]: Checked pairs total: 112318 [2021-11-03 04:16:51,841 INFO L133 LiptonReduction]: Total number of compositions: 483 [2021-11-03 04:16:51,851 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 105 places, 119 transitions, 246 flow [2021-11-03 04:16:51,931 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1432 states, 1421 states have (on average 2.29064039408867) internal successors, (3255), 1431 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:51,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 1432 states, 1421 states have (on average 2.29064039408867) internal successors, (3255), 1431 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:51,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-11-03 04:16:51,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:51,943 INFO L513 BasicCegarLoop]: trace histogram [1] [2021-11-03 04:16:51,943 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:16:51,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:51,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1632, now seen corresponding path program 1 times [2021-11-03 04:16:51,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:51,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62738759] [2021-11-03 04:16:51,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:51,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:52,104 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:52,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62738759] [2021-11-03 04:16:52,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62738759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:52,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:52,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-11-03 04:16:52,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849293412] [2021-11-03 04:16:52,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:16:52,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:52,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:16:52,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:16:52,147 INFO L87 Difference]: Start difference. First operand has 1432 states, 1421 states have (on average 2.29064039408867) internal successors, (3255), 1431 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:52,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:52,214 INFO L93 Difference]: Finished difference Result 1431 states and 3197 transitions. [2021-11-03 04:16:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:16:52,216 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-11-03 04:16:52,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:52,246 INFO L225 Difference]: With dead ends: 1431 [2021-11-03 04:16:52,246 INFO L226 Difference]: Without dead ends: 1431 [2021-11-03 04:16:52,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:16:52,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2021-11-03 04:16:52,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1431. [2021-11-03 04:16:52,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1421 states have (on average 2.2498240675580576) internal successors, (3197), 1430 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 3197 transitions. [2021-11-03 04:16:52,374 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 3197 transitions. Word has length 1 [2021-11-03 04:16:52,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:52,374 INFO L470 AbstractCegarLoop]: Abstraction has 1431 states and 3197 transitions. [2021-11-03 04:16:52,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 3197 transitions. [2021-11-03 04:16:52,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:16:52,376 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:52,376 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:16:52,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:16:52,377 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:16:52,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:52,377 INFO L85 PathProgramCache]: Analyzing trace with hash 533155304, now seen corresponding path program 1 times [2021-11-03 04:16:52,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:52,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545633450] [2021-11-03 04:16:52,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:52,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:52,539 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:52,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545633450] [2021-11-03 04:16:52,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545633450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:52,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:52,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:16:52,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189783436] [2021-11-03 04:16:52,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:16:52,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:52,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:16:52,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:52,543 INFO L87 Difference]: Start difference. First operand 1431 states and 3197 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:52,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:52,631 INFO L93 Difference]: Finished difference Result 2685 states and 6008 transitions. [2021-11-03 04:16:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:16:52,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 04:16:52,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:52,654 INFO L225 Difference]: With dead ends: 2685 [2021-11-03 04:16:52,654 INFO L226 Difference]: Without dead ends: 2685 [2021-11-03 04:16:52,655 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:52,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2021-11-03 04:16:52,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1450. [2021-11-03 04:16:52,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1440 states have (on average 2.247916666666667) internal successors, (3237), 1449 states have internal predecessors, (3237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 3237 transitions. [2021-11-03 04:16:52,734 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 3237 transitions. Word has length 6 [2021-11-03 04:16:52,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:52,734 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 3237 transitions. [2021-11-03 04:16:52,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:52,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 3237 transitions. [2021-11-03 04:16:52,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 04:16:52,736 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:52,736 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:52,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:16:52,736 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:16:52,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:52,737 INFO L85 PathProgramCache]: Analyzing trace with hash -652027102, now seen corresponding path program 1 times [2021-11-03 04:16:52,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:52,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928132089] [2021-11-03 04:16:52,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:52,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:52,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:52,923 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:52,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928132089] [2021-11-03 04:16:52,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928132089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:52,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:52,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:16:52,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840677526] [2021-11-03 04:16:52,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:16:52,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:52,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:16:52,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:52,926 INFO L87 Difference]: Start difference. First operand 1450 states and 3237 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:52,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:52,945 INFO L93 Difference]: Finished difference Result 1450 states and 3218 transitions. [2021-11-03 04:16:52,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:16:52,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-03 04:16:52,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:52,957 INFO L225 Difference]: With dead ends: 1450 [2021-11-03 04:16:52,957 INFO L226 Difference]: Without dead ends: 1450 [2021-11-03 04:16:52,957 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:52,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2021-11-03 04:16:52,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1450. [2021-11-03 04:16:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1440 states have (on average 2.234722222222222) internal successors, (3218), 1449 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:53,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 3218 transitions. [2021-11-03 04:16:53,010 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 3218 transitions. Word has length 7 [2021-11-03 04:16:53,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:53,011 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 3218 transitions. [2021-11-03 04:16:53,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 3218 transitions. [2021-11-03 04:16:53,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:16:53,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:53,012 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:53,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 04:16:53,013 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:16:53,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:53,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1268994512, now seen corresponding path program 1 times [2021-11-03 04:16:53,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:53,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40469915] [2021-11-03 04:16:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:53,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:53,143 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:53,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40469915] [2021-11-03 04:16:53,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40469915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:53,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:53,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:16:53,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933039002] [2021-11-03 04:16:53,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:16:53,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:53,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:16:53,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:16:53,147 INFO L87 Difference]: Start difference. First operand 1450 states and 3218 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:53,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:53,775 INFO L93 Difference]: Finished difference Result 1836 states and 4079 transitions. [2021-11-03 04:16:53,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:16:53,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 04:16:53,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:53,790 INFO L225 Difference]: With dead ends: 1836 [2021-11-03 04:16:53,790 INFO L226 Difference]: Without dead ends: 1836 [2021-11-03 04:16:53,790 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:16:53,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2021-11-03 04:16:53,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1557. [2021-11-03 04:16:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1547 states have (on average 2.2385261797026503) internal successors, (3463), 1556 states have internal predecessors, (3463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:53,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 3463 transitions. [2021-11-03 04:16:53,851 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 3463 transitions. Word has length 8 [2021-11-03 04:16:53,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:53,852 INFO L470 AbstractCegarLoop]: Abstraction has 1557 states and 3463 transitions. [2021-11-03 04:16:53,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:53,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 3463 transitions. [2021-11-03 04:16:53,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:16:53,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:53,855 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:53,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 04:16:53,856 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:16:53,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:53,857 INFO L85 PathProgramCache]: Analyzing trace with hash -266692161, now seen corresponding path program 1 times [2021-11-03 04:16:53,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:53,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504479041] [2021-11-03 04:16:53,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:53,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:53,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:53,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504479041] [2021-11-03 04:16:53,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504479041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:53,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:53,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:16:53,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078069374] [2021-11-03 04:16:53,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:16:53,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:53,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:16:53,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:53,948 INFO L87 Difference]: Start difference. First operand 1557 states and 3463 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:54,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:54,040 INFO L93 Difference]: Finished difference Result 2546 states and 5650 transitions. [2021-11-03 04:16:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:16:54,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-03 04:16:54,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:54,062 INFO L225 Difference]: With dead ends: 2546 [2021-11-03 04:16:54,062 INFO L226 Difference]: Without dead ends: 2546 [2021-11-03 04:16:54,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:54,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-11-03 04:16:54,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1614. [2021-11-03 04:16:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1604 states have (on average 2.233790523690773) internal successors, (3583), 1613 states have internal predecessors, (3583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:54,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 3583 transitions. [2021-11-03 04:16:54,174 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 3583 transitions. Word has length 10 [2021-11-03 04:16:54,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:54,174 INFO L470 AbstractCegarLoop]: Abstraction has 1614 states and 3583 transitions. [2021-11-03 04:16:54,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:54,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 3583 transitions. [2021-11-03 04:16:54,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 04:16:54,182 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:54,182 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:54,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 04:16:54,182 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:16:54,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:54,183 INFO L85 PathProgramCache]: Analyzing trace with hash 154059772, now seen corresponding path program 1 times [2021-11-03 04:16:54,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:54,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139929244] [2021-11-03 04:16:54,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:54,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:54,394 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:54,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139929244] [2021-11-03 04:16:54,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139929244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:54,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:54,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 04:16:54,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345888714] [2021-11-03 04:16:54,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:16:54,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:54,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:16:54,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:16:54,397 INFO L87 Difference]: Start difference. First operand 1614 states and 3583 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:55,220 INFO L93 Difference]: Finished difference Result 2006 states and 4439 transitions. [2021-11-03 04:16:55,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:16:55,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-03 04:16:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:55,235 INFO L225 Difference]: With dead ends: 2006 [2021-11-03 04:16:55,235 INFO L226 Difference]: Without dead ends: 2006 [2021-11-03 04:16:55,236 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:16:55,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2021-11-03 04:16:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1628. [2021-11-03 04:16:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1618 states have (on average 2.234239802224969) internal successors, (3615), 1627 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 3615 transitions. [2021-11-03 04:16:55,292 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 3615 transitions. Word has length 14 [2021-11-03 04:16:55,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:55,293 INFO L470 AbstractCegarLoop]: Abstraction has 1628 states and 3615 transitions. [2021-11-03 04:16:55,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:55,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 3615 transitions. [2021-11-03 04:16:55,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 04:16:55,295 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:55,295 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:55,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 04:16:55,296 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:16:55,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:55,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1842800160, now seen corresponding path program 2 times [2021-11-03 04:16:55,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:55,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943656757] [2021-11-03 04:16:55,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:55,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:55,499 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:55,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943656757] [2021-11-03 04:16:55,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943656757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:55,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:55,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 04:16:55,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36860323] [2021-11-03 04:16:55,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 04:16:55,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:55,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 04:16:55,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:16:55,501 INFO L87 Difference]: Start difference. First operand 1628 states and 3615 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:56,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:56,897 INFO L93 Difference]: Finished difference Result 2042 states and 4517 transitions. [2021-11-03 04:16:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-03 04:16:56,898 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-03 04:16:56,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:56,913 INFO L225 Difference]: With dead ends: 2042 [2021-11-03 04:16:56,913 INFO L226 Difference]: Without dead ends: 2042 [2021-11-03 04:16:56,914 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=233, Invalid=469, Unknown=0, NotChecked=0, Total=702 [2021-11-03 04:16:56,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2021-11-03 04:16:56,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1630. [2021-11-03 04:16:56,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1620 states have (on average 2.2339506172839507) internal successors, (3619), 1629 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 3619 transitions. [2021-11-03 04:16:56,970 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 3619 transitions. Word has length 14 [2021-11-03 04:16:56,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:56,970 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 3619 transitions. [2021-11-03 04:16:56,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:56,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 3619 transitions. [2021-11-03 04:16:56,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 04:16:56,972 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:56,972 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:56,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 04:16:56,973 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:16:56,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:56,973 INFO L85 PathProgramCache]: Analyzing trace with hash 431005844, now seen corresponding path program 3 times [2021-11-03 04:16:56,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:56,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641719815] [2021-11-03 04:16:56,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:56,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:57,247 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:57,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641719815] [2021-11-03 04:16:57,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641719815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:57,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:57,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 04:16:57,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210165260] [2021-11-03 04:16:57,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:16:57,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:57,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:16:57,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:16:57,249 INFO L87 Difference]: Start difference. First operand 1630 states and 3619 transitions. Second operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:59,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:59,064 INFO L93 Difference]: Finished difference Result 2071 states and 4578 transitions. [2021-11-03 04:16:59,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 04:16:59,065 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-03 04:16:59,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:59,080 INFO L225 Difference]: With dead ends: 2071 [2021-11-03 04:16:59,080 INFO L226 Difference]: Without dead ends: 2071 [2021-11-03 04:16:59,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=643, Unknown=0, NotChecked=0, Total=930 [2021-11-03 04:16:59,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2021-11-03 04:16:59,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1623. [2021-11-03 04:16:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1613 states have (on average 2.2337259764414137) internal successors, (3603), 1622 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 3603 transitions. [2021-11-03 04:16:59,136 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 3603 transitions. Word has length 14 [2021-11-03 04:16:59,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:59,137 INFO L470 AbstractCegarLoop]: Abstraction has 1623 states and 3603 transitions. [2021-11-03 04:16:59,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:59,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 3603 transitions. [2021-11-03 04:16:59,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 04:16:59,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:59,138 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:59,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 04:16:59,139 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:16:59,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:59,139 INFO L85 PathProgramCache]: Analyzing trace with hash -738050489, now seen corresponding path program 1 times [2021-11-03 04:16:59,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:16:59,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102473489] [2021-11-03 04:16:59,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:59,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:16:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:59,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:16:59,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102473489] [2021-11-03 04:16:59,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102473489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:59,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:59,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 04:16:59,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117430905] [2021-11-03 04:16:59,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:16:59,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:16:59,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:16:59,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:16:59,288 INFO L87 Difference]: Start difference. First operand 1623 states and 3603 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:00,096 INFO L93 Difference]: Finished difference Result 2597 states and 5770 transitions. [2021-11-03 04:17:00,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:17:00,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-03 04:17:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:00,115 INFO L225 Difference]: With dead ends: 2597 [2021-11-03 04:17:00,116 INFO L226 Difference]: Without dead ends: 2560 [2021-11-03 04:17:00,116 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:17:00,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2021-11-03 04:17:00,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1901. [2021-11-03 04:17:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1901 states, 1891 states have (on average 2.2659968270756212) internal successors, (4285), 1900 states have internal predecessors, (4285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:00,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 4285 transitions. [2021-11-03 04:17:00,204 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 4285 transitions. Word has length 14 [2021-11-03 04:17:00,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:00,204 INFO L470 AbstractCegarLoop]: Abstraction has 1901 states and 4285 transitions. [2021-11-03 04:17:00,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:00,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 4285 transitions. [2021-11-03 04:17:00,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:17:00,206 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:00,206 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:00,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 04:17:00,207 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:00,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:00,207 INFO L85 PathProgramCache]: Analyzing trace with hash 480634046, now seen corresponding path program 1 times [2021-11-03 04:17:00,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:00,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91659833] [2021-11-03 04:17:00,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:00,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:00,385 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:00,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91659833] [2021-11-03 04:17:00,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91659833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:00,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:00,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 04:17:00,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021480301] [2021-11-03 04:17:00,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:17:00,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:00,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:17:00,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:17:00,387 INFO L87 Difference]: Start difference. First operand 1901 states and 4285 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:01,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:01,430 INFO L93 Difference]: Finished difference Result 2387 states and 5345 transitions. [2021-11-03 04:17:01,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 04:17:01,431 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 04:17:01,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:01,442 INFO L225 Difference]: With dead ends: 2387 [2021-11-03 04:17:01,442 INFO L226 Difference]: Without dead ends: 2387 [2021-11-03 04:17:01,443 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:17:01,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2021-11-03 04:17:01,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 1946. [2021-11-03 04:17:01,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1936 states have (on average 2.2670454545454546) internal successors, (4389), 1945 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 4389 transitions. [2021-11-03 04:17:01,542 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 4389 transitions. Word has length 15 [2021-11-03 04:17:01,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:01,543 INFO L470 AbstractCegarLoop]: Abstraction has 1946 states and 4389 transitions. [2021-11-03 04:17:01,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:01,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 4389 transitions. [2021-11-03 04:17:01,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:17:01,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:01,545 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:01,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 04:17:01,547 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:01,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:01,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2038909349, now seen corresponding path program 1 times [2021-11-03 04:17:01,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:01,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360190080] [2021-11-03 04:17:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:01,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:01,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:01,760 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:01,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360190080] [2021-11-03 04:17:01,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360190080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:01,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:01,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 04:17:01,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755230618] [2021-11-03 04:17:01,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:17:01,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:01,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:17:01,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:17:01,762 INFO L87 Difference]: Start difference. First operand 1946 states and 4389 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:02,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:02,536 INFO L93 Difference]: Finished difference Result 2553 states and 5722 transitions. [2021-11-03 04:17:02,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:17:02,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 04:17:02,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:02,543 INFO L225 Difference]: With dead ends: 2553 [2021-11-03 04:17:02,543 INFO L226 Difference]: Without dead ends: 2553 [2021-11-03 04:17:02,544 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:17:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2021-11-03 04:17:02,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2020. [2021-11-03 04:17:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 2010 states have (on average 2.264676616915423) internal successors, (4552), 2019 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:02,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 4552 transitions. [2021-11-03 04:17:02,608 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 4552 transitions. Word has length 15 [2021-11-03 04:17:02,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:02,609 INFO L470 AbstractCegarLoop]: Abstraction has 2020 states and 4552 transitions. [2021-11-03 04:17:02,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:02,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 4552 transitions. [2021-11-03 04:17:02,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:17:02,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:02,628 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:02,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 04:17:02,628 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:02,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:02,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1210957215, now seen corresponding path program 2 times [2021-11-03 04:17:02,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:02,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885823347] [2021-11-03 04:17:02,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:02,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:03,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:03,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885823347] [2021-11-03 04:17:03,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885823347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:03,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:03,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:17:03,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283306724] [2021-11-03 04:17:03,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:17:03,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:03,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:17:03,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:17:03,160 INFO L87 Difference]: Start difference. First operand 2020 states and 4552 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:05,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:05,241 INFO L93 Difference]: Finished difference Result 2896 states and 6461 transitions. [2021-11-03 04:17:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 04:17:05,242 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 04:17:05,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:05,248 INFO L225 Difference]: With dead ends: 2896 [2021-11-03 04:17:05,248 INFO L226 Difference]: Without dead ends: 2896 [2021-11-03 04:17:05,248 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-11-03 04:17:05,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2021-11-03 04:17:05,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 2052. [2021-11-03 04:17:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2042 states have (on average 2.265426052889324) internal successors, (4626), 2051 states have internal predecessors, (4626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:05,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 4626 transitions. [2021-11-03 04:17:05,324 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 4626 transitions. Word has length 15 [2021-11-03 04:17:05,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:05,325 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 4626 transitions. [2021-11-03 04:17:05,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:05,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 4626 transitions. [2021-11-03 04:17:05,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:17:05,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:05,327 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:05,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 04:17:05,328 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:05,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:05,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2107593627, now seen corresponding path program 3 times [2021-11-03 04:17:05,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:05,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49586662] [2021-11-03 04:17:05,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:05,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:05,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:05,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49586662] [2021-11-03 04:17:05,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49586662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:05,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:05,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:17:05,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697128373] [2021-11-03 04:17:05,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:17:05,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:05,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:17:05,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:17:05,651 INFO L87 Difference]: Start difference. First operand 2052 states and 4626 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:08,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:08,631 INFO L93 Difference]: Finished difference Result 3019 states and 6751 transitions. [2021-11-03 04:17:08,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-03 04:17:08,632 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 04:17:08,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:08,639 INFO L225 Difference]: With dead ends: 3019 [2021-11-03 04:17:08,639 INFO L226 Difference]: Without dead ends: 3019 [2021-11-03 04:17:08,640 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=416, Invalid=1066, Unknown=0, NotChecked=0, Total=1482 [2021-11-03 04:17:08,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3019 states. [2021-11-03 04:17:08,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3019 to 2089. [2021-11-03 04:17:08,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 2079 states have (on average 2.2674362674362674) internal successors, (4714), 2088 states have internal predecessors, (4714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:08,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 4714 transitions. [2021-11-03 04:17:08,723 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 4714 transitions. Word has length 15 [2021-11-03 04:17:08,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:08,723 INFO L470 AbstractCegarLoop]: Abstraction has 2089 states and 4714 transitions. [2021-11-03 04:17:08,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:08,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 4714 transitions. [2021-11-03 04:17:08,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:17:08,725 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:08,726 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:08,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 04:17:08,726 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:08,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:08,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1291978522, now seen corresponding path program 2 times [2021-11-03 04:17:08,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:08,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522775600] [2021-11-03 04:17:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:08,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:08,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:08,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522775600] [2021-11-03 04:17:08,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522775600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:08,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:08,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:17:08,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672093504] [2021-11-03 04:17:08,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:17:08,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:08,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:17:08,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:17:08,990 INFO L87 Difference]: Start difference. First operand 2089 states and 4714 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:11,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:11,054 INFO L93 Difference]: Finished difference Result 2795 states and 6250 transitions. [2021-11-03 04:17:11,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 04:17:11,054 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 04:17:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:11,061 INFO L225 Difference]: With dead ends: 2795 [2021-11-03 04:17:11,062 INFO L226 Difference]: Without dead ends: 2795 [2021-11-03 04:17:11,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=279, Invalid=651, Unknown=0, NotChecked=0, Total=930 [2021-11-03 04:17:11,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2021-11-03 04:17:11,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2119. [2021-11-03 04:17:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2119 states, 2109 states have (on average 2.2678994784257944) internal successors, (4783), 2118 states have internal predecessors, (4783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 4783 transitions. [2021-11-03 04:17:11,121 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 4783 transitions. Word has length 15 [2021-11-03 04:17:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:11,122 INFO L470 AbstractCegarLoop]: Abstraction has 2119 states and 4783 transitions. [2021-11-03 04:17:11,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 4783 transitions. [2021-11-03 04:17:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:17:11,124 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:11,124 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:11,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 04:17:11,124 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:11,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:11,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1593787411, now seen corresponding path program 4 times [2021-11-03 04:17:11,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:11,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168045678] [2021-11-03 04:17:11,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:11,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:11,457 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:11,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168045678] [2021-11-03 04:17:11,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168045678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:11,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:11,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:17:11,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362995546] [2021-11-03 04:17:11,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:17:11,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:11,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:17:11,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:17:11,459 INFO L87 Difference]: Start difference. First operand 2119 states and 4783 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:15,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:15,160 INFO L93 Difference]: Finished difference Result 2903 states and 6496 transitions. [2021-11-03 04:17:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-03 04:17:15,161 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 04:17:15,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:15,168 INFO L225 Difference]: With dead ends: 2903 [2021-11-03 04:17:15,169 INFO L226 Difference]: Without dead ends: 2903 [2021-11-03 04:17:15,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=517, Invalid=1375, Unknown=0, NotChecked=0, Total=1892 [2021-11-03 04:17:15,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2021-11-03 04:17:15,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2098. [2021-11-03 04:17:15,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2088 states have (on average 2.2658045977011496) internal successors, (4731), 2097 states have internal predecessors, (4731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:15,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 4731 transitions. [2021-11-03 04:17:15,226 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 4731 transitions. Word has length 15 [2021-11-03 04:17:15,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:15,227 INFO L470 AbstractCegarLoop]: Abstraction has 2098 states and 4731 transitions. [2021-11-03 04:17:15,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:15,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 4731 transitions. [2021-11-03 04:17:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:17:15,229 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:15,229 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:15,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 04:17:15,229 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:15,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:15,230 INFO L85 PathProgramCache]: Analyzing trace with hash 983225119, now seen corresponding path program 5 times [2021-11-03 04:17:15,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:15,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999322612] [2021-11-03 04:17:15,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:15,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:15,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:15,538 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:15,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999322612] [2021-11-03 04:17:15,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999322612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:15,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:15,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:17:15,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703641216] [2021-11-03 04:17:15,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:17:15,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:15,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:17:15,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:17:15,542 INFO L87 Difference]: Start difference. First operand 2098 states and 4731 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:18,682 INFO L93 Difference]: Finished difference Result 2659 states and 5952 transitions. [2021-11-03 04:17:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-03 04:17:18,683 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 04:17:18,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:18,689 INFO L225 Difference]: With dead ends: 2659 [2021-11-03 04:17:18,689 INFO L226 Difference]: Without dead ends: 2659 [2021-11-03 04:17:18,690 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=447, Invalid=1275, Unknown=0, NotChecked=0, Total=1722 [2021-11-03 04:17:18,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2021-11-03 04:17:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2091. [2021-11-03 04:17:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2091 states, 2081 states have (on average 2.2662181643440653) internal successors, (4716), 2090 states have internal predecessors, (4716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 4716 transitions. [2021-11-03 04:17:18,740 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 4716 transitions. Word has length 15 [2021-11-03 04:17:18,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:18,740 INFO L470 AbstractCegarLoop]: Abstraction has 2091 states and 4716 transitions. [2021-11-03 04:17:18,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:18,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 4716 transitions. [2021-11-03 04:17:18,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:17:18,742 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:18,742 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:18,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 04:17:18,742 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:18,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:18,743 INFO L85 PathProgramCache]: Analyzing trace with hash 129702403, now seen corresponding path program 6 times [2021-11-03 04:17:18,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:18,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770728144] [2021-11-03 04:17:18,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:18,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:19,044 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:19,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770728144] [2021-11-03 04:17:19,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770728144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:19,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:19,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:17:19,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137950131] [2021-11-03 04:17:19,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:17:19,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:19,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:17:19,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:17:19,046 INFO L87 Difference]: Start difference. First operand 2091 states and 4716 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:22,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:22,540 INFO L93 Difference]: Finished difference Result 2664 states and 5965 transitions. [2021-11-03 04:17:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-03 04:17:22,540 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 04:17:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:22,543 INFO L225 Difference]: With dead ends: 2664 [2021-11-03 04:17:22,543 INFO L226 Difference]: Without dead ends: 2664 [2021-11-03 04:17:22,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2021-11-03 04:17:22,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2021-11-03 04:17:22,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2084. [2021-11-03 04:17:22,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2074 states have (on average 2.2656702025072324) internal successors, (4699), 2083 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:22,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 4699 transitions. [2021-11-03 04:17:22,591 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 4699 transitions. Word has length 15 [2021-11-03 04:17:22,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:22,591 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 4699 transitions. [2021-11-03 04:17:22,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:22,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 4699 transitions. [2021-11-03 04:17:22,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:17:22,593 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:22,594 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:22,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 04:17:22,594 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:22,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:22,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1920017355, now seen corresponding path program 7 times [2021-11-03 04:17:22,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:22,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100493044] [2021-11-03 04:17:22,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:22,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:22,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:22,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100493044] [2021-11-03 04:17:22,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100493044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:22,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:22,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 04:17:22,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339379697] [2021-11-03 04:17:22,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:17:22,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:22,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:17:22,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:17:22,730 INFO L87 Difference]: Start difference. First operand 2084 states and 4699 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:23,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:23,199 INFO L93 Difference]: Finished difference Result 2298 states and 5141 transitions. [2021-11-03 04:17:23,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:17:23,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 04:17:23,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:23,203 INFO L225 Difference]: With dead ends: 2298 [2021-11-03 04:17:23,203 INFO L226 Difference]: Without dead ends: 2298 [2021-11-03 04:17:23,203 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:17:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2021-11-03 04:17:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1999. [2021-11-03 04:17:23,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1999 states, 1989 states have (on average 2.2619406737053795) internal successors, (4499), 1998 states have internal predecessors, (4499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 4499 transitions. [2021-11-03 04:17:23,244 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 4499 transitions. Word has length 15 [2021-11-03 04:17:23,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:23,245 INFO L470 AbstractCegarLoop]: Abstraction has 1999 states and 4499 transitions. [2021-11-03 04:17:23,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 4499 transitions. [2021-11-03 04:17:23,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:17:23,246 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:23,246 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:23,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 04:17:23,247 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:23,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:23,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2077301175, now seen corresponding path program 8 times [2021-11-03 04:17:23,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:23,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682789415] [2021-11-03 04:17:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:23,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:23,701 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:23,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682789415] [2021-11-03 04:17:23,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682789415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:23,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:23,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:17:23,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81189892] [2021-11-03 04:17:23,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:17:23,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:23,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:17:23,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:17:23,703 INFO L87 Difference]: Start difference. First operand 1999 states and 4499 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:25,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:25,282 INFO L93 Difference]: Finished difference Result 2653 states and 5912 transitions. [2021-11-03 04:17:25,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 04:17:25,282 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 04:17:25,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:25,285 INFO L225 Difference]: With dead ends: 2653 [2021-11-03 04:17:25,285 INFO L226 Difference]: Without dead ends: 2653 [2021-11-03 04:17:25,286 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2021-11-03 04:17:25,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2021-11-03 04:17:25,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 2001. [2021-11-03 04:17:25,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 1991 states have (on average 2.2626820693119036) internal successors, (4505), 2000 states have internal predecessors, (4505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:25,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 4505 transitions. [2021-11-03 04:17:25,326 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 4505 transitions. Word has length 15 [2021-11-03 04:17:25,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:25,327 INFO L470 AbstractCegarLoop]: Abstraction has 2001 states and 4505 transitions. [2021-11-03 04:17:25,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:25,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 4505 transitions. [2021-11-03 04:17:25,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:17:25,328 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:25,328 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:25,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 04:17:25,329 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:25,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:25,329 INFO L85 PathProgramCache]: Analyzing trace with hash 205495105, now seen corresponding path program 9 times [2021-11-03 04:17:25,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:25,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324843976] [2021-11-03 04:17:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:25,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:25,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:25,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324843976] [2021-11-03 04:17:25,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324843976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:25,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:25,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:17:25,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307438883] [2021-11-03 04:17:25,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:17:25,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:17:25,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:17:25,618 INFO L87 Difference]: Start difference. First operand 2001 states and 4505 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:28,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:28,443 INFO L93 Difference]: Finished difference Result 2713 states and 6045 transitions. [2021-11-03 04:17:28,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-03 04:17:28,444 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 04:17:28,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:28,446 INFO L225 Difference]: With dead ends: 2713 [2021-11-03 04:17:28,446 INFO L226 Difference]: Without dead ends: 2713 [2021-11-03 04:17:28,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=332, Invalid=858, Unknown=0, NotChecked=0, Total=1190 [2021-11-03 04:17:28,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2021-11-03 04:17:28,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 1957. [2021-11-03 04:17:28,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1947 states have (on average 2.2573189522342063) internal successors, (4395), 1956 states have internal predecessors, (4395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:28,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 4395 transitions. [2021-11-03 04:17:28,483 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 4395 transitions. Word has length 15 [2021-11-03 04:17:28,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:28,483 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 4395 transitions. [2021-11-03 04:17:28,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:28,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 4395 transitions. [2021-11-03 04:17:28,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 04:17:28,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:28,485 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:28,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 04:17:28,485 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:28,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:28,486 INFO L85 PathProgramCache]: Analyzing trace with hash 460090517, now seen corresponding path program 1 times [2021-11-03 04:17:28,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:28,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524777579] [2021-11-03 04:17:28,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:28,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:28,631 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:28,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524777579] [2021-11-03 04:17:28,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524777579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:28,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:28,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 04:17:28,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767949465] [2021-11-03 04:17:28,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 04:17:28,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:28,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 04:17:28,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:17:28,632 INFO L87 Difference]: Start difference. First operand 1957 states and 4395 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:29,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:29,524 INFO L93 Difference]: Finished difference Result 2474 states and 5514 transitions. [2021-11-03 04:17:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:17:29,524 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 04:17:29,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:29,527 INFO L225 Difference]: With dead ends: 2474 [2021-11-03 04:17:29,527 INFO L226 Difference]: Without dead ends: 2474 [2021-11-03 04:17:29,528 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:17:29,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2021-11-03 04:17:29,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 1970. [2021-11-03 04:17:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1960 states have (on average 2.25765306122449) internal successors, (4425), 1969 states have internal predecessors, (4425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:29,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 4425 transitions. [2021-11-03 04:17:29,576 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 4425 transitions. Word has length 16 [2021-11-03 04:17:29,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:29,578 INFO L470 AbstractCegarLoop]: Abstraction has 1970 states and 4425 transitions. [2021-11-03 04:17:29,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:29,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 4425 transitions. [2021-11-03 04:17:29,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 04:17:29,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:29,580 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:29,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 04:17:29,580 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:29,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:29,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1412711685, now seen corresponding path program 2 times [2021-11-03 04:17:29,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:29,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285982024] [2021-11-03 04:17:29,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:29,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:29,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:29,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285982024] [2021-11-03 04:17:29,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285982024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:29,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:29,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 04:17:29,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330362306] [2021-11-03 04:17:29,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:17:29,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:29,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:17:29,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:17:29,815 INFO L87 Difference]: Start difference. First operand 1970 states and 4425 transitions. Second operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:32,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:32,461 INFO L93 Difference]: Finished difference Result 4027 states and 8924 transitions. [2021-11-03 04:17:32,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-03 04:17:32,461 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 04:17:32,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:32,466 INFO L225 Difference]: With dead ends: 4027 [2021-11-03 04:17:32,466 INFO L226 Difference]: Without dead ends: 4027 [2021-11-03 04:17:32,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=643, Invalid=1613, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 04:17:32,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4027 states. [2021-11-03 04:17:32,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4027 to 1965. [2021-11-03 04:17:32,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1955 states have (on average 2.257289002557545) internal successors, (4413), 1964 states have internal predecessors, (4413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:32,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 4413 transitions. [2021-11-03 04:17:32,499 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 4413 transitions. Word has length 16 [2021-11-03 04:17:32,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:32,499 INFO L470 AbstractCegarLoop]: Abstraction has 1965 states and 4413 transitions. [2021-11-03 04:17:32,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:32,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 4413 transitions. [2021-11-03 04:17:32,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 04:17:32,501 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:32,501 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:32,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 04:17:32,501 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:32,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:32,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1871951765, now seen corresponding path program 3 times [2021-11-03 04:17:32,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:32,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867994302] [2021-11-03 04:17:32,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:32,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:32,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:32,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867994302] [2021-11-03 04:17:32,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867994302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:32,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:32,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 04:17:32,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315667891] [2021-11-03 04:17:32,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:17:32,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:32,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:17:32,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:17:32,688 INFO L87 Difference]: Start difference. First operand 1965 states and 4413 transitions. Second operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:34,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:34,365 INFO L93 Difference]: Finished difference Result 2527 states and 5621 transitions. [2021-11-03 04:17:34,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-03 04:17:34,365 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 04:17:34,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:34,368 INFO L225 Difference]: With dead ends: 2527 [2021-11-03 04:17:34,369 INFO L226 Difference]: Without dead ends: 2527 [2021-11-03 04:17:34,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2021-11-03 04:17:34,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2021-11-03 04:17:34,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 1928. [2021-11-03 04:17:34,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1928 states, 1918 states have (on average 2.256517205422315) internal successors, (4328), 1927 states have internal predecessors, (4328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:34,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 4328 transitions. [2021-11-03 04:17:34,416 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 4328 transitions. Word has length 16 [2021-11-03 04:17:34,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:34,416 INFO L470 AbstractCegarLoop]: Abstraction has 1928 states and 4328 transitions. [2021-11-03 04:17:34,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:34,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 4328 transitions. [2021-11-03 04:17:34,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 04:17:34,418 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:34,418 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:34,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 04:17:34,419 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:34,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:34,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1312980072, now seen corresponding path program 1 times [2021-11-03 04:17:34,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:34,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952567428] [2021-11-03 04:17:34,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:34,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:34,764 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:34,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952567428] [2021-11-03 04:17:34,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952567428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:34,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:34,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:17:34,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283370999] [2021-11-03 04:17:34,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:17:34,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:34,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:17:34,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:17:34,766 INFO L87 Difference]: Start difference. First operand 1928 states and 4328 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:37,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:37,934 INFO L93 Difference]: Finished difference Result 2407 states and 5361 transitions. [2021-11-03 04:17:37,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-03 04:17:37,935 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 04:17:37,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:37,938 INFO L225 Difference]: With dead ends: 2407 [2021-11-03 04:17:37,938 INFO L226 Difference]: Without dead ends: 2407 [2021-11-03 04:17:37,938 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=499, Invalid=1481, Unknown=0, NotChecked=0, Total=1980 [2021-11-03 04:17:37,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-03 04:17:37,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1930. [2021-11-03 04:17:37,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1920 states have (on average 2.25625) internal successors, (4332), 1929 states have internal predecessors, (4332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:37,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 4332 transitions. [2021-11-03 04:17:37,973 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 4332 transitions. Word has length 16 [2021-11-03 04:17:37,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:37,974 INFO L470 AbstractCegarLoop]: Abstraction has 1930 states and 4332 transitions. [2021-11-03 04:17:37,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:37,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 4332 transitions. [2021-11-03 04:17:37,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:17:37,975 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:37,975 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:37,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 04:17:37,976 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:37,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:37,976 INFO L85 PathProgramCache]: Analyzing trace with hash -114979491, now seen corresponding path program 1 times [2021-11-03 04:17:37,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:37,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253867023] [2021-11-03 04:17:37,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:37,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:38,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:38,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:38,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253867023] [2021-11-03 04:17:38,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253867023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:38,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:38,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:17:38,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420464830] [2021-11-03 04:17:38,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:17:38,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:38,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:17:38,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:17:38,688 INFO L87 Difference]: Start difference. First operand 1930 states and 4332 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:42,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:42,261 INFO L93 Difference]: Finished difference Result 3701 states and 8307 transitions. [2021-11-03 04:17:42,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-03 04:17:42,261 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:17:42,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:42,265 INFO L225 Difference]: With dead ends: 3701 [2021-11-03 04:17:42,266 INFO L226 Difference]: Without dead ends: 3701 [2021-11-03 04:17:42,266 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=338, Invalid=1222, Unknown=0, NotChecked=0, Total=1560 [2021-11-03 04:17:42,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2021-11-03 04:17:42,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 2121. [2021-11-03 04:17:42,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2121 states, 2111 states have (on average 2.279962103268593) internal successors, (4813), 2120 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 4813 transitions. [2021-11-03 04:17:42,324 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 4813 transitions. Word has length 17 [2021-11-03 04:17:42,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:42,325 INFO L470 AbstractCegarLoop]: Abstraction has 2121 states and 4813 transitions. [2021-11-03 04:17:42,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:42,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 4813 transitions. [2021-11-03 04:17:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:17:42,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:42,327 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:42,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 04:17:42,327 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:42,328 INFO L85 PathProgramCache]: Analyzing trace with hash -104283561, now seen corresponding path program 2 times [2021-11-03 04:17:42,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:42,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188121761] [2021-11-03 04:17:42,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:42,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:42,833 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:42,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188121761] [2021-11-03 04:17:42,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188121761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:42,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:42,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 04:17:42,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470909375] [2021-11-03 04:17:42,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:17:42,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:42,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:17:42,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:17:42,835 INFO L87 Difference]: Start difference. First operand 2121 states and 4813 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:45,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:45,515 INFO L93 Difference]: Finished difference Result 4011 states and 9060 transitions. [2021-11-03 04:17:45,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-03 04:17:45,516 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:17:45,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:45,520 INFO L225 Difference]: With dead ends: 4011 [2021-11-03 04:17:45,520 INFO L226 Difference]: Without dead ends: 4011 [2021-11-03 04:17:45,521 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=287, Invalid=973, Unknown=0, NotChecked=0, Total=1260 [2021-11-03 04:17:45,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2021-11-03 04:17:45,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 2187. [2021-11-03 04:17:45,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2177 states have (on average 2.2861736334405145) internal successors, (4977), 2186 states have internal predecessors, (4977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 4977 transitions. [2021-11-03 04:17:45,578 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 4977 transitions. Word has length 17 [2021-11-03 04:17:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:45,578 INFO L470 AbstractCegarLoop]: Abstraction has 2187 states and 4977 transitions. [2021-11-03 04:17:45,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:45,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 4977 transitions. [2021-11-03 04:17:45,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:17:45,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:45,580 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:45,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-03 04:17:45,581 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:45,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:45,581 INFO L85 PathProgramCache]: Analyzing trace with hash -846340253, now seen corresponding path program 3 times [2021-11-03 04:17:45,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:45,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73541129] [2021-11-03 04:17:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:45,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:46,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:46,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73541129] [2021-11-03 04:17:46,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73541129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:46,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:46,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:17:46,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122578914] [2021-11-03 04:17:46,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:17:46,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:46,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:17:46,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:17:46,263 INFO L87 Difference]: Start difference. First operand 2187 states and 4977 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:50,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:50,492 INFO L93 Difference]: Finished difference Result 4220 states and 9559 transitions. [2021-11-03 04:17:50,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 04:17:50,492 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:17:50,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:50,497 INFO L225 Difference]: With dead ends: 4220 [2021-11-03 04:17:50,497 INFO L226 Difference]: Without dead ends: 4220 [2021-11-03 04:17:50,498 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=412, Invalid=1568, Unknown=0, NotChecked=0, Total=1980 [2021-11-03 04:17:50,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4220 states. [2021-11-03 04:17:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4220 to 2206. [2021-11-03 04:17:50,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 2196 states have (on average 2.2887067395264116) internal successors, (5026), 2205 states have internal predecessors, (5026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 5026 transitions. [2021-11-03 04:17:50,551 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 5026 transitions. Word has length 17 [2021-11-03 04:17:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:50,552 INFO L470 AbstractCegarLoop]: Abstraction has 2206 states and 5026 transitions. [2021-11-03 04:17:50,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 5026 transitions. [2021-11-03 04:17:50,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:17:50,554 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:50,554 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:50,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 04:17:50,554 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:50,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:50,555 INFO L85 PathProgramCache]: Analyzing trace with hash -835644323, now seen corresponding path program 4 times [2021-11-03 04:17:50,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:50,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265022841] [2021-11-03 04:17:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:50,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:51,018 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:51,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265022841] [2021-11-03 04:17:51,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265022841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:51,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:51,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 04:17:51,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951452044] [2021-11-03 04:17:51,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:17:51,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:51,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:17:51,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:17:51,020 INFO L87 Difference]: Start difference. First operand 2206 states and 5026 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:54,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:54,210 INFO L93 Difference]: Finished difference Result 4401 states and 9967 transitions. [2021-11-03 04:17:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-03 04:17:54,210 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:17:54,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:54,215 INFO L225 Difference]: With dead ends: 4401 [2021-11-03 04:17:54,215 INFO L226 Difference]: Without dead ends: 4401 [2021-11-03 04:17:54,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=290, Invalid=970, Unknown=0, NotChecked=0, Total=1260 [2021-11-03 04:17:54,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2021-11-03 04:17:54,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 2195. [2021-11-03 04:17:54,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 2185 states have (on average 2.2874141876430207) internal successors, (4998), 2194 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:54,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 4998 transitions. [2021-11-03 04:17:54,249 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 4998 transitions. Word has length 17 [2021-11-03 04:17:54,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:54,249 INFO L470 AbstractCegarLoop]: Abstraction has 2195 states and 4998 transitions. [2021-11-03 04:17:54,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:54,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 4998 transitions. [2021-11-03 04:17:54,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:17:54,251 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:54,251 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:54,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 04:17:54,251 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:54,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:54,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1603419815, now seen corresponding path program 5 times [2021-11-03 04:17:54,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:54,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477858035] [2021-11-03 04:17:54,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:54,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:54,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:54,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477858035] [2021-11-03 04:17:54,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477858035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:54,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:54,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:17:54,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799311400] [2021-11-03 04:17:54,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:17:54,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:54,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:17:54,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:17:54,818 INFO L87 Difference]: Start difference. First operand 2195 states and 4998 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:58,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:58,278 INFO L93 Difference]: Finished difference Result 4028 states and 9110 transitions. [2021-11-03 04:17:58,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-03 04:17:58,278 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:17:58,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:58,283 INFO L225 Difference]: With dead ends: 4028 [2021-11-03 04:17:58,283 INFO L226 Difference]: Without dead ends: 4028 [2021-11-03 04:17:58,284 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=339, Invalid=1221, Unknown=0, NotChecked=0, Total=1560 [2021-11-03 04:17:58,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2021-11-03 04:17:58,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 2205. [2021-11-03 04:17:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 2195 states have (on average 2.2874715261958998) internal successors, (5021), 2204 states have internal predecessors, (5021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:58,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 5021 transitions. [2021-11-03 04:17:58,337 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 5021 transitions. Word has length 17 [2021-11-03 04:17:58,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:58,337 INFO L470 AbstractCegarLoop]: Abstraction has 2205 states and 5021 transitions. [2021-11-03 04:17:58,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:58,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 5021 transitions. [2021-11-03 04:17:58,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:17:58,339 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:58,339 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:58,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 04:17:58,339 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:17:58,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:58,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1592723885, now seen corresponding path program 6 times [2021-11-03 04:17:58,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:17:58,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119714446] [2021-11-03 04:17:58,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:58,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:17:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:58,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:58,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:17:58,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119714446] [2021-11-03 04:17:58,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119714446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:58,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:58,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 04:17:58,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889019489] [2021-11-03 04:17:58,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:17:58,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:17:58,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:17:58,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:17:58,815 INFO L87 Difference]: Start difference. First operand 2205 states and 5021 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:02,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:02,285 INFO L93 Difference]: Finished difference Result 4322 states and 9798 transitions. [2021-11-03 04:18:02,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-03 04:18:02,286 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:18:02,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:02,290 INFO L225 Difference]: With dead ends: 4322 [2021-11-03 04:18:02,291 INFO L226 Difference]: Without dead ends: 4322 [2021-11-03 04:18:02,291 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2021-11-03 04:18:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4322 states. [2021-11-03 04:18:02,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4322 to 2197. [2021-11-03 04:18:02,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2197 states, 2187 states have (on average 2.2876085962505717) internal successors, (5003), 2196 states have internal predecessors, (5003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 5003 transitions. [2021-11-03 04:18:02,339 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 5003 transitions. Word has length 17 [2021-11-03 04:18:02,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:02,339 INFO L470 AbstractCegarLoop]: Abstraction has 2197 states and 5003 transitions. [2021-11-03 04:18:02,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 5003 transitions. [2021-11-03 04:18:02,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:18:02,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:02,340 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:02,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 04:18:02,340 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:18:02,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:02,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1239010537, now seen corresponding path program 7 times [2021-11-03 04:18:02,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:18:02,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017398042] [2021-11-03 04:18:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:02,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:18:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:02,954 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:18:02,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017398042] [2021-11-03 04:18:02,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017398042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:02,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:02,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:18:02,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619627567] [2021-11-03 04:18:02,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:18:02,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:18:02,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:18:02,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:18:02,956 INFO L87 Difference]: Start difference. First operand 2197 states and 5003 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:07,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:07,400 INFO L93 Difference]: Finished difference Result 4380 states and 9961 transitions. [2021-11-03 04:18:07,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-03 04:18:07,401 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:18:07,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:07,407 INFO L225 Difference]: With dead ends: 4380 [2021-11-03 04:18:07,407 INFO L226 Difference]: Without dead ends: 4380 [2021-11-03 04:18:07,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=383, Invalid=1423, Unknown=0, NotChecked=0, Total=1806 [2021-11-03 04:18:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4380 states. [2021-11-03 04:18:07,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4380 to 2222. [2021-11-03 04:18:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2212 states have (on average 2.2884267631103072) internal successors, (5062), 2221 states have internal predecessors, (5062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 5062 transitions. [2021-11-03 04:18:07,448 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 5062 transitions. Word has length 17 [2021-11-03 04:18:07,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:07,449 INFO L470 AbstractCegarLoop]: Abstraction has 2222 states and 5062 transitions. [2021-11-03 04:18:07,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:07,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 5062 transitions. [2021-11-03 04:18:07,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:18:07,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:07,450 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:07,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-03 04:18:07,451 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:18:07,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:07,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1249706467, now seen corresponding path program 8 times [2021-11-03 04:18:07,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:18:07,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336442445] [2021-11-03 04:18:07,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:07,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:18:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:07,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:18:07,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336442445] [2021-11-03 04:18:07,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336442445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:07,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:07,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 04:18:07,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91591578] [2021-11-03 04:18:07,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:18:07,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:18:07,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:18:07,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:18:07,846 INFO L87 Difference]: Start difference. First operand 2222 states and 5062 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:11,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:11,178 INFO L93 Difference]: Finished difference Result 4121 states and 9359 transitions. [2021-11-03 04:18:11,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-03 04:18:11,179 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:18:11,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:11,185 INFO L225 Difference]: With dead ends: 4121 [2021-11-03 04:18:11,185 INFO L226 Difference]: Without dead ends: 4121 [2021-11-03 04:18:11,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=364, Invalid=1118, Unknown=0, NotChecked=0, Total=1482 [2021-11-03 04:18:11,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2021-11-03 04:18:11,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 2178. [2021-11-03 04:18:11,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2168 states have (on average 2.2809040590405902) internal successors, (4945), 2177 states have internal predecessors, (4945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 4945 transitions. [2021-11-03 04:18:11,224 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 4945 transitions. Word has length 17 [2021-11-03 04:18:11,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:11,224 INFO L470 AbstractCegarLoop]: Abstraction has 2178 states and 4945 transitions. [2021-11-03 04:18:11,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:11,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 4945 transitions. [2021-11-03 04:18:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:18:11,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:11,226 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:11,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-03 04:18:11,226 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:18:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1501709713, now seen corresponding path program 9 times [2021-11-03 04:18:11,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:18:11,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116612222] [2021-11-03 04:18:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:11,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:18:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:11,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:11,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:18:11,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116612222] [2021-11-03 04:18:11,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116612222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:11,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:11,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:18:11,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968774505] [2021-11-03 04:18:11,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:18:11,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:18:11,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:18:11,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:18:11,811 INFO L87 Difference]: Start difference. First operand 2178 states and 4945 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:16,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:16,610 INFO L93 Difference]: Finished difference Result 3829 states and 8664 transitions. [2021-11-03 04:18:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-03 04:18:16,611 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:18:16,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:16,615 INFO L225 Difference]: With dead ends: 3829 [2021-11-03 04:18:16,615 INFO L226 Difference]: Without dead ends: 3829 [2021-11-03 04:18:16,616 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=475, Invalid=1687, Unknown=0, NotChecked=0, Total=2162 [2021-11-03 04:18:16,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2021-11-03 04:18:16,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 2215. [2021-11-03 04:18:16,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 2205 states have (on average 2.2879818594104306) internal successors, (5045), 2214 states have internal predecessors, (5045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:16,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 5045 transitions. [2021-11-03 04:18:16,651 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 5045 transitions. Word has length 17 [2021-11-03 04:18:16,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:16,652 INFO L470 AbstractCegarLoop]: Abstraction has 2215 states and 5045 transitions. [2021-11-03 04:18:16,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:16,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 5045 transitions. [2021-11-03 04:18:16,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:18:16,654 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:16,654 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:16,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-03 04:18:16,654 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:18:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:16,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1512405643, now seen corresponding path program 10 times [2021-11-03 04:18:16,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:18:16,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635149264] [2021-11-03 04:18:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:16,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:18:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:17,114 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:18:17,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635149264] [2021-11-03 04:18:17,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635149264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:17,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:17,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 04:18:17,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289478058] [2021-11-03 04:18:17,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:18:17,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:18:17,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:18:17,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:18:17,116 INFO L87 Difference]: Start difference. First operand 2215 states and 5045 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:20,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:20,587 INFO L93 Difference]: Finished difference Result 4040 states and 9180 transitions. [2021-11-03 04:18:20,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-03 04:18:20,587 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:18:20,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:20,592 INFO L225 Difference]: With dead ends: 4040 [2021-11-03 04:18:20,592 INFO L226 Difference]: Without dead ends: 4040 [2021-11-03 04:18:20,593 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=307, Invalid=1025, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 04:18:20,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-11-03 04:18:20,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 2230. [2021-11-03 04:18:20,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2230 states, 2220 states have (on average 2.289189189189189) internal successors, (5082), 2229 states have internal predecessors, (5082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:20,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 5082 transitions. [2021-11-03 04:18:20,631 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 5082 transitions. Word has length 17 [2021-11-03 04:18:20,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:20,632 INFO L470 AbstractCegarLoop]: Abstraction has 2230 states and 5082 transitions. [2021-11-03 04:18:20,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:20,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 5082 transitions. [2021-11-03 04:18:20,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:18:20,633 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:20,633 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:20,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-03 04:18:20,633 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:18:20,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:20,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1897291051, now seen corresponding path program 11 times [2021-11-03 04:18:20,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:18:20,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645426786] [2021-11-03 04:18:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:20,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:18:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:21,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:18:21,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645426786] [2021-11-03 04:18:21,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645426786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:21,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:21,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:18:21,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664064992] [2021-11-03 04:18:21,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:18:21,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:18:21,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:18:21,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:18:21,275 INFO L87 Difference]: Start difference. First operand 2230 states and 5082 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:25,564 INFO L93 Difference]: Finished difference Result 3790 states and 8597 transitions. [2021-11-03 04:18:25,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-03 04:18:25,564 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:18:25,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:25,569 INFO L225 Difference]: With dead ends: 3790 [2021-11-03 04:18:25,569 INFO L226 Difference]: Without dead ends: 3790 [2021-11-03 04:18:25,570 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=405, Invalid=1487, Unknown=0, NotChecked=0, Total=1892 [2021-11-03 04:18:25,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2021-11-03 04:18:25,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 2240. [2021-11-03 04:18:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 2230 states have (on average 2.289237668161435) internal successors, (5105), 2239 states have internal predecessors, (5105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:25,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 5105 transitions. [2021-11-03 04:18:25,605 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 5105 transitions. Word has length 17 [2021-11-03 04:18:25,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:25,605 INFO L470 AbstractCegarLoop]: Abstraction has 2240 states and 5105 transitions. [2021-11-03 04:18:25,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:25,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 5105 transitions. [2021-11-03 04:18:25,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:18:25,607 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:25,607 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:25,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-03 04:18:25,608 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:18:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:25,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1907986981, now seen corresponding path program 12 times [2021-11-03 04:18:25,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:18:25,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868022610] [2021-11-03 04:18:25,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:25,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:18:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:26,061 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:18:26,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868022610] [2021-11-03 04:18:26,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868022610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:26,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:26,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 04:18:26,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228640044] [2021-11-03 04:18:26,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:18:26,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:18:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:18:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:18:26,062 INFO L87 Difference]: Start difference. First operand 2240 states and 5105 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:29,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:29,980 INFO L93 Difference]: Finished difference Result 4119 states and 9358 transitions. [2021-11-03 04:18:29,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-03 04:18:29,981 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:18:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:29,986 INFO L225 Difference]: With dead ends: 4119 [2021-11-03 04:18:29,986 INFO L226 Difference]: Without dead ends: 4119 [2021-11-03 04:18:29,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=352, Invalid=1130, Unknown=0, NotChecked=0, Total=1482 [2021-11-03 04:18:29,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2021-11-03 04:18:30,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 2232. [2021-11-03 04:18:30,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 2222 states have (on average 2.2893789378937894) internal successors, (5087), 2231 states have internal predecessors, (5087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 5087 transitions. [2021-11-03 04:18:30,029 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 5087 transitions. Word has length 17 [2021-11-03 04:18:30,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:30,029 INFO L470 AbstractCegarLoop]: Abstraction has 2232 states and 5087 transitions. [2021-11-03 04:18:30,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 5087 transitions. [2021-11-03 04:18:30,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:18:30,031 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:30,031 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:30,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-03 04:18:30,032 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:18:30,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:30,032 INFO L85 PathProgramCache]: Analyzing trace with hash 444754107, now seen corresponding path program 13 times [2021-11-03 04:18:30,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:18:30,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991015729] [2021-11-03 04:18:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:30,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:18:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:30,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:18:30,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991015729] [2021-11-03 04:18:30,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991015729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:30,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:30,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:18:30,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190509281] [2021-11-03 04:18:30,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:18:30,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:18:30,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:18:30,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:18:30,623 INFO L87 Difference]: Start difference. First operand 2232 states and 5087 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:35,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:35,288 INFO L93 Difference]: Finished difference Result 4172 states and 9505 transitions. [2021-11-03 04:18:35,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-03 04:18:35,288 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:18:35,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:35,293 INFO L225 Difference]: With dead ends: 4172 [2021-11-03 04:18:35,293 INFO L226 Difference]: Without dead ends: 4172 [2021-11-03 04:18:35,294 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=450, Invalid=1712, Unknown=0, NotChecked=0, Total=2162 [2021-11-03 04:18:35,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-11-03 04:18:35,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 2252. [2021-11-03 04:18:35,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2242 states have (on average 2.288135593220339) internal successors, (5130), 2251 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 5130 transitions. [2021-11-03 04:18:35,330 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 5130 transitions. Word has length 17 [2021-11-03 04:18:35,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:35,330 INFO L470 AbstractCegarLoop]: Abstraction has 2252 states and 5130 transitions. [2021-11-03 04:18:35,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:35,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 5130 transitions. [2021-11-03 04:18:35,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:18:35,332 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:35,333 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:35,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-03 04:18:35,333 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:18:35,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:35,333 INFO L85 PathProgramCache]: Analyzing trace with hash 455450037, now seen corresponding path program 14 times [2021-11-03 04:18:35,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:18:35,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986567617] [2021-11-03 04:18:35,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:35,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:18:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:35,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:35,683 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:18:35,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986567617] [2021-11-03 04:18:35,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986567617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:35,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:35,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 04:18:35,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432222786] [2021-11-03 04:18:35,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:18:35,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:18:35,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:18:35,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:18:35,685 INFO L87 Difference]: Start difference. First operand 2252 states and 5130 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:39,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:39,793 INFO L93 Difference]: Finished difference Result 4117 states and 9406 transitions. [2021-11-03 04:18:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-03 04:18:39,794 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:18:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:39,799 INFO L225 Difference]: With dead ends: 4117 [2021-11-03 04:18:39,799 INFO L226 Difference]: Without dead ends: 4117 [2021-11-03 04:18:39,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=433, Invalid=1373, Unknown=0, NotChecked=0, Total=1806 [2021-11-03 04:18:39,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2021-11-03 04:18:39,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 2178. [2021-11-03 04:18:39,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2168 states have (on average 2.2809040590405902) internal successors, (4945), 2177 states have internal predecessors, (4945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:39,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 4945 transitions. [2021-11-03 04:18:39,855 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 4945 transitions. Word has length 17 [2021-11-03 04:18:39,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:39,856 INFO L470 AbstractCegarLoop]: Abstraction has 2178 states and 4945 transitions. [2021-11-03 04:18:39,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:39,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 4945 transitions. [2021-11-03 04:18:39,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:18:39,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:39,857 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:39,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-03 04:18:39,858 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:18:39,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:39,858 INFO L85 PathProgramCache]: Analyzing trace with hash 210202589, now seen corresponding path program 15 times [2021-11-03 04:18:39,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:18:39,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851433731] [2021-11-03 04:18:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:39,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:18:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:40,351 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:18:40,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851433731] [2021-11-03 04:18:40,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851433731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:40,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:40,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:18:40,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697421204] [2021-11-03 04:18:40,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:18:40,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:18:40,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:18:40,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:18:40,353 INFO L87 Difference]: Start difference. First operand 2178 states and 4945 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:44,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:44,155 INFO L93 Difference]: Finished difference Result 3509 states and 7956 transitions. [2021-11-03 04:18:44,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-03 04:18:44,156 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:18:44,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:44,160 INFO L225 Difference]: With dead ends: 3509 [2021-11-03 04:18:44,160 INFO L226 Difference]: Without dead ends: 3509 [2021-11-03 04:18:44,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=370, Invalid=1436, Unknown=0, NotChecked=0, Total=1806 [2021-11-03 04:18:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2021-11-03 04:18:44,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 2200. [2021-11-03 04:18:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 2190 states have (on average 2.2858447488584477) internal successors, (5006), 2199 states have internal predecessors, (5006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:44,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 5006 transitions. [2021-11-03 04:18:44,192 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 5006 transitions. Word has length 17 [2021-11-03 04:18:44,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:44,192 INFO L470 AbstractCegarLoop]: Abstraction has 2200 states and 5006 transitions. [2021-11-03 04:18:44,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:44,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 5006 transitions. [2021-11-03 04:18:44,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:18:44,194 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:44,194 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:44,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-03 04:18:44,194 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:18:44,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:44,194 INFO L85 PathProgramCache]: Analyzing trace with hash 220898519, now seen corresponding path program 16 times [2021-11-03 04:18:44,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:18:44,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432972919] [2021-11-03 04:18:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:44,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:18:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:44,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:44,587 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:18:44,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432972919] [2021-11-03 04:18:44,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432972919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:44,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:44,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 04:18:44,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762126353] [2021-11-03 04:18:44,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:18:44,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:18:44,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:18:44,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:18:44,589 INFO L87 Difference]: Start difference. First operand 2200 states and 5006 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:48,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:48,630 INFO L93 Difference]: Finished difference Result 3837 states and 8715 transitions. [2021-11-03 04:18:48,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-03 04:18:48,630 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:18:48,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:48,635 INFO L225 Difference]: With dead ends: 3837 [2021-11-03 04:18:48,635 INFO L226 Difference]: Without dead ends: 3837 [2021-11-03 04:18:48,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=353, Invalid=1207, Unknown=0, NotChecked=0, Total=1560 [2021-11-03 04:18:48,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2021-11-03 04:18:48,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 2200. [2021-11-03 04:18:48,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 2190 states have (on average 2.2858447488584477) internal successors, (5006), 2199 states have internal predecessors, (5006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 5006 transitions. [2021-11-03 04:18:48,671 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 5006 transitions. Word has length 17 [2021-11-03 04:18:48,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:48,671 INFO L470 AbstractCegarLoop]: Abstraction has 2200 states and 5006 transitions. [2021-11-03 04:18:48,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:48,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 5006 transitions. [2021-11-03 04:18:48,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:18:48,672 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:48,672 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:48,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-03 04:18:48,673 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:18:48,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:48,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1242334355, now seen corresponding path program 17 times [2021-11-03 04:18:48,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:18:48,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486559593] [2021-11-03 04:18:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:48,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:18:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:49,238 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:18:49,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486559593] [2021-11-03 04:18:49,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486559593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:49,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:49,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:18:49,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768422307] [2021-11-03 04:18:49,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:18:49,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:18:49,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:18:49,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:18:49,239 INFO L87 Difference]: Start difference. First operand 2200 states and 5006 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:54,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:54,344 INFO L93 Difference]: Finished difference Result 3579 states and 8120 transitions. [2021-11-03 04:18:54,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-03 04:18:54,345 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:18:54,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:54,349 INFO L225 Difference]: With dead ends: 3579 [2021-11-03 04:18:54,349 INFO L226 Difference]: Without dead ends: 3579 [2021-11-03 04:18:54,350 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=409, Invalid=1661, Unknown=0, NotChecked=0, Total=2070 [2021-11-03 04:18:54,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2021-11-03 04:18:54,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 2225. [2021-11-03 04:18:54,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 2215 states have (on average 2.2866817155756207) internal successors, (5065), 2224 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:54,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 5065 transitions. [2021-11-03 04:18:54,384 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 5065 transitions. Word has length 17 [2021-11-03 04:18:54,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:54,384 INFO L470 AbstractCegarLoop]: Abstraction has 2225 states and 5065 transitions. [2021-11-03 04:18:54,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:54,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 5065 transitions. [2021-11-03 04:18:54,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:18:54,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:54,386 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:54,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-03 04:18:54,386 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:18:54,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:54,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1231638425, now seen corresponding path program 18 times [2021-11-03 04:18:54,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:18:54,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100994758] [2021-11-03 04:18:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:54,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:18:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:54,781 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:18:54,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100994758] [2021-11-03 04:18:54,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100994758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:54,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:54,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 04:18:54,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790629642] [2021-11-03 04:18:54,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:18:54,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:18:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:18:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:18:54,783 INFO L87 Difference]: Start difference. First operand 2225 states and 5065 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:58,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:58,450 INFO L93 Difference]: Finished difference Result 3861 states and 8834 transitions. [2021-11-03 04:18:58,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-03 04:18:58,450 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:18:58,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:58,456 INFO L225 Difference]: With dead ends: 3861 [2021-11-03 04:18:58,456 INFO L226 Difference]: Without dead ends: 3861 [2021-11-03 04:18:58,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=392, Invalid=1330, Unknown=0, NotChecked=0, Total=1722 [2021-11-03 04:18:58,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2021-11-03 04:18:58,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 2178. [2021-11-03 04:18:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2168 states have (on average 2.2809040590405902) internal successors, (4945), 2177 states have internal predecessors, (4945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:58,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 4945 transitions. [2021-11-03 04:18:58,492 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 4945 transitions. Word has length 17 [2021-11-03 04:18:58,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:58,492 INFO L470 AbstractCegarLoop]: Abstraction has 2178 states and 4945 transitions. [2021-11-03 04:18:58,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:18:58,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 4945 transitions. [2021-11-03 04:18:58,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:18:58,493 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:58,493 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:18:58,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-03 04:18:58,494 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:18:58,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:58,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1138910895, now seen corresponding path program 19 times [2021-11-03 04:18:58,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:18:58,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646784053] [2021-11-03 04:18:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:58,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:18:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:59,139 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:18:59,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646784053] [2021-11-03 04:18:59,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646784053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:59,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:59,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:18:59,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796822210] [2021-11-03 04:18:59,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:18:59,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:18:59,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:18:59,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:18:59,142 INFO L87 Difference]: Start difference. First operand 2178 states and 4945 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:04,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:04,275 INFO L93 Difference]: Finished difference Result 3520 states and 7983 transitions. [2021-11-03 04:19:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-03 04:19:04,276 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:19:04,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:04,280 INFO L225 Difference]: With dead ends: 3520 [2021-11-03 04:19:04,280 INFO L226 Difference]: Without dead ends: 3520 [2021-11-03 04:19:04,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=421, Invalid=1741, Unknown=0, NotChecked=0, Total=2162 [2021-11-03 04:19:04,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3520 states. [2021-11-03 04:19:04,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3520 to 2215. [2021-11-03 04:19:04,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 2205 states have (on average 2.2866213151927437) internal successors, (5042), 2214 states have internal predecessors, (5042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:04,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 5042 transitions. [2021-11-03 04:19:04,334 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 5042 transitions. Word has length 17 [2021-11-03 04:19:04,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:04,334 INFO L470 AbstractCegarLoop]: Abstraction has 2215 states and 5042 transitions. [2021-11-03 04:19:04,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:04,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 5042 transitions. [2021-11-03 04:19:04,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:19:04,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:04,337 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:04,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-03 04:19:04,337 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:19:04,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:04,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1128214965, now seen corresponding path program 20 times [2021-11-03 04:19:04,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:19:04,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345692733] [2021-11-03 04:19:04,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:04,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:19:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:04,669 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:19:04,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345692733] [2021-11-03 04:19:04,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345692733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:04,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:04,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 04:19:04,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370812096] [2021-11-03 04:19:04,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:19:04,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:19:04,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:19:04,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:19:04,671 INFO L87 Difference]: Start difference. First operand 2215 states and 5042 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:08,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:08,949 INFO L93 Difference]: Finished difference Result 3666 states and 8363 transitions. [2021-11-03 04:19:08,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-03 04:19:08,950 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:19:08,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:08,954 INFO L225 Difference]: With dead ends: 3666 [2021-11-03 04:19:08,954 INFO L226 Difference]: Without dead ends: 3666 [2021-11-03 04:19:08,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=402, Invalid=1490, Unknown=0, NotChecked=0, Total=1892 [2021-11-03 04:19:08,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2021-11-03 04:19:08,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 2178. [2021-11-03 04:19:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2168 states have (on average 2.2809040590405902) internal successors, (4945), 2177 states have internal predecessors, (4945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 4945 transitions. [2021-11-03 04:19:08,985 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 4945 transitions. Word has length 17 [2021-11-03 04:19:08,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:08,986 INFO L470 AbstractCegarLoop]: Abstraction has 2178 states and 4945 transitions. [2021-11-03 04:19:08,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:08,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 4945 transitions. [2021-11-03 04:19:08,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:19:08,987 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:08,987 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:08,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-03 04:19:08,988 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:19:08,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:08,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1356649571, now seen corresponding path program 21 times [2021-11-03 04:19:08,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:19:08,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555941934] [2021-11-03 04:19:08,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:08,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:19:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:09,322 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:19:09,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555941934] [2021-11-03 04:19:09,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555941934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:09,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:09,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 04:19:09,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054697792] [2021-11-03 04:19:09,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:19:09,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:19:09,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:19:09,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:19:09,323 INFO L87 Difference]: Start difference. First operand 2178 states and 4945 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:12,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:12,083 INFO L93 Difference]: Finished difference Result 3808 states and 8668 transitions. [2021-11-03 04:19:12,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-03 04:19:12,083 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:19:12,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:12,088 INFO L225 Difference]: With dead ends: 3808 [2021-11-03 04:19:12,088 INFO L226 Difference]: Without dead ends: 3808 [2021-11-03 04:19:12,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=364, Invalid=1196, Unknown=0, NotChecked=0, Total=1560 [2021-11-03 04:19:12,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2021-11-03 04:19:12,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 2200. [2021-11-03 04:19:12,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 2190 states have (on average 2.2799086757990867) internal successors, (4993), 2199 states have internal predecessors, (4993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 4993 transitions. [2021-11-03 04:19:12,121 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 4993 transitions. Word has length 17 [2021-11-03 04:19:12,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:12,121 INFO L470 AbstractCegarLoop]: Abstraction has 2200 states and 4993 transitions. [2021-11-03 04:19:12,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:12,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 4993 transitions. [2021-11-03 04:19:12,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:19:12,122 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:12,123 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:12,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-03 04:19:12,123 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:19:12,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:12,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2058523183, now seen corresponding path program 22 times [2021-11-03 04:19:12,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:19:12,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123075937] [2021-11-03 04:19:12,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:12,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:19:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:12,475 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:19:12,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123075937] [2021-11-03 04:19:12,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123075937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:12,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:12,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 04:19:12,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687300036] [2021-11-03 04:19:12,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:19:12,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:19:12,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:19:12,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:19:12,476 INFO L87 Difference]: Start difference. First operand 2200 states and 4993 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:16,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:16,933 INFO L93 Difference]: Finished difference Result 3742 states and 8537 transitions. [2021-11-03 04:19:16,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-03 04:19:16,933 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:19:16,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:16,938 INFO L225 Difference]: With dead ends: 3742 [2021-11-03 04:19:16,938 INFO L226 Difference]: Without dead ends: 3742 [2021-11-03 04:19:16,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=546, Invalid=2004, Unknown=0, NotChecked=0, Total=2550 [2021-11-03 04:19:16,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-11-03 04:19:16,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 2200. [2021-11-03 04:19:16,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 2190 states have (on average 2.2799086757990867) internal successors, (4993), 2199 states have internal predecessors, (4993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:16,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 4993 transitions. [2021-11-03 04:19:16,978 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 4993 transitions. Word has length 17 [2021-11-03 04:19:16,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:16,978 INFO L470 AbstractCegarLoop]: Abstraction has 2200 states and 4993 transitions. [2021-11-03 04:19:16,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:16,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 4993 transitions. [2021-11-03 04:19:16,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:19:16,980 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:16,980 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:16,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-03 04:19:16,981 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:19:16,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:16,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1194596557, now seen corresponding path program 23 times [2021-11-03 04:19:16,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:19:16,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398195158] [2021-11-03 04:19:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:16,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:19:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:17,722 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:19:17,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398195158] [2021-11-03 04:19:17,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398195158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:17,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:17,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:19:17,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148041284] [2021-11-03 04:19:17,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:19:17,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:19:17,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:19:17,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:19:17,723 INFO L87 Difference]: Start difference. First operand 2200 states and 4993 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:21,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:21,135 INFO L93 Difference]: Finished difference Result 3709 states and 8387 transitions. [2021-11-03 04:19:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-03 04:19:21,135 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:19:21,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:21,140 INFO L225 Difference]: With dead ends: 3709 [2021-11-03 04:19:21,140 INFO L226 Difference]: Without dead ends: 3709 [2021-11-03 04:19:21,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=270, Invalid=990, Unknown=0, NotChecked=0, Total=1260 [2021-11-03 04:19:21,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2021-11-03 04:19:21,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 2220. [2021-11-03 04:19:21,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 2210 states have (on average 2.28552036199095) internal successors, (5051), 2219 states have internal predecessors, (5051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:21,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 5051 transitions. [2021-11-03 04:19:21,176 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 5051 transitions. Word has length 17 [2021-11-03 04:19:21,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:21,177 INFO L470 AbstractCegarLoop]: Abstraction has 2220 states and 5051 transitions. [2021-11-03 04:19:21,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 5051 transitions. [2021-11-03 04:19:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:19:21,178 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:21,178 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:21,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-03 04:19:21,179 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:19:21,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:21,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1183900627, now seen corresponding path program 24 times [2021-11-03 04:19:21,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:19:21,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119827607] [2021-11-03 04:19:21,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:21,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:19:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:21,745 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:19:21,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119827607] [2021-11-03 04:19:21,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119827607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:21,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:21,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 04:19:21,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055855585] [2021-11-03 04:19:21,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:19:21,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:19:21,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:19:21,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:19:21,747 INFO L87 Difference]: Start difference. First operand 2220 states and 5051 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:24,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:24,965 INFO L93 Difference]: Finished difference Result 3896 states and 8850 transitions. [2021-11-03 04:19:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-03 04:19:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:19:24,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:24,970 INFO L225 Difference]: With dead ends: 3896 [2021-11-03 04:19:24,970 INFO L226 Difference]: Without dead ends: 3896 [2021-11-03 04:19:24,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2021-11-03 04:19:24,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-11-03 04:19:25,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 2251. [2021-11-03 04:19:25,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2241 states have (on average 2.28826416778224) internal successors, (5128), 2250 states have internal predecessors, (5128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:25,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 5128 transitions. [2021-11-03 04:19:25,006 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 5128 transitions. Word has length 17 [2021-11-03 04:19:25,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:25,007 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 5128 transitions. [2021-11-03 04:19:25,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:25,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 5128 transitions. [2021-11-03 04:19:25,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:19:25,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:25,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:25,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-03 04:19:25,008 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:19:25,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:25,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1624408963, now seen corresponding path program 25 times [2021-11-03 04:19:25,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:19:25,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250957958] [2021-11-03 04:19:25,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:25,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:19:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:25,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:19:25,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250957958] [2021-11-03 04:19:25,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250957958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:25,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:25,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:19:25,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727316839] [2021-11-03 04:19:25,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:19:25,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:19:25,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:19:25,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:19:25,645 INFO L87 Difference]: Start difference. First operand 2251 states and 5128 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:29,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:29,504 INFO L93 Difference]: Finished difference Result 4070 states and 9185 transitions. [2021-11-03 04:19:29,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-03 04:19:29,504 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:19:29,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:29,509 INFO L225 Difference]: With dead ends: 4070 [2021-11-03 04:19:29,509 INFO L226 Difference]: Without dead ends: 4070 [2021-11-03 04:19:29,509 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=291, Invalid=1041, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 04:19:29,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2021-11-03 04:19:29,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 2258. [2021-11-03 04:19:29,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2258 states, 2248 states have (on average 2.2887010676156585) internal successors, (5145), 2257 states have internal predecessors, (5145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2258 states to 2258 states and 5145 transitions. [2021-11-03 04:19:29,543 INFO L78 Accepts]: Start accepts. Automaton has 2258 states and 5145 transitions. Word has length 17 [2021-11-03 04:19:29,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:29,544 INFO L470 AbstractCegarLoop]: Abstraction has 2258 states and 5145 transitions. [2021-11-03 04:19:29,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:29,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2258 states and 5145 transitions. [2021-11-03 04:19:29,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:19:29,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:29,545 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:29,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-03 04:19:29,545 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:19:29,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:29,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1635104893, now seen corresponding path program 26 times [2021-11-03 04:19:29,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:19:29,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736041226] [2021-11-03 04:19:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:29,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:19:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:30,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:30,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:19:30,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736041226] [2021-11-03 04:19:30,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736041226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:30,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:30,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 04:19:30,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187194559] [2021-11-03 04:19:30,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:19:30,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:19:30,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:19:30,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:19:30,051 INFO L87 Difference]: Start difference. First operand 2258 states and 5145 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:33,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:33,448 INFO L93 Difference]: Finished difference Result 4257 states and 9639 transitions. [2021-11-03 04:19:33,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 04:19:33,449 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:19:33,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:33,455 INFO L225 Difference]: With dead ends: 4257 [2021-11-03 04:19:33,455 INFO L226 Difference]: Without dead ends: 4257 [2021-11-03 04:19:33,455 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=242, Invalid=814, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 04:19:33,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4257 states. [2021-11-03 04:19:33,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4257 to 2246. [2021-11-03 04:19:33,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2246 states, 2236 states have (on average 2.2866726296958855) internal successors, (5113), 2245 states have internal predecessors, (5113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:33,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 5113 transitions. [2021-11-03 04:19:33,499 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 5113 transitions. Word has length 17 [2021-11-03 04:19:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:33,500 INFO L470 AbstractCegarLoop]: Abstraction has 2246 states and 5113 transitions. [2021-11-03 04:19:33,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:33,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 5113 transitions. [2021-11-03 04:19:33,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:19:33,501 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:33,502 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:33,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-03 04:19:33,502 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:19:33,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:33,502 INFO L85 PathProgramCache]: Analyzing trace with hash 893048201, now seen corresponding path program 27 times [2021-11-03 04:19:33,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:19:33,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212998396] [2021-11-03 04:19:33,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:33,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:19:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:34,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:34,223 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:19:34,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212998396] [2021-11-03 04:19:34,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212998396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:34,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:34,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:19:34,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848951798] [2021-11-03 04:19:34,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:19:34,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:19:34,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:19:34,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:19:34,224 INFO L87 Difference]: Start difference. First operand 2246 states and 5113 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:38,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:38,580 INFO L93 Difference]: Finished difference Result 4146 states and 9373 transitions. [2021-11-03 04:19:38,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-03 04:19:38,581 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:19:38,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:38,586 INFO L225 Difference]: With dead ends: 4146 [2021-11-03 04:19:38,586 INFO L226 Difference]: Without dead ends: 4146 [2021-11-03 04:19:38,586 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=385, Invalid=1421, Unknown=0, NotChecked=0, Total=1806 [2021-11-03 04:19:38,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4146 states. [2021-11-03 04:19:38,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4146 to 2251. [2021-11-03 04:19:38,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2241 states have (on average 2.286925479696564) internal successors, (5125), 2250 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 5125 transitions. [2021-11-03 04:19:38,639 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 5125 transitions. Word has length 17 [2021-11-03 04:19:38,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:38,639 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 5125 transitions. [2021-11-03 04:19:38,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:38,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 5125 transitions. [2021-11-03 04:19:38,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:19:38,640 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:38,641 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:38,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-03 04:19:38,641 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:19:38,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:38,641 INFO L85 PathProgramCache]: Analyzing trace with hash 903744131, now seen corresponding path program 28 times [2021-11-03 04:19:38,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:19:38,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689961213] [2021-11-03 04:19:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:38,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:19:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:39,175 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:19:39,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689961213] [2021-11-03 04:19:39,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689961213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:39,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:39,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 04:19:39,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569484005] [2021-11-03 04:19:39,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:19:39,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:19:39,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:19:39,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:19:39,177 INFO L87 Difference]: Start difference. First operand 2251 states and 5125 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:42,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:42,879 INFO L93 Difference]: Finished difference Result 4180 states and 9475 transitions. [2021-11-03 04:19:42,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 04:19:42,879 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:19:42,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:42,886 INFO L225 Difference]: With dead ends: 4180 [2021-11-03 04:19:42,886 INFO L226 Difference]: Without dead ends: 4180 [2021-11-03 04:19:42,887 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 04:19:42,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2021-11-03 04:19:42,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 2233. [2021-11-03 04:19:42,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2233 states, 2223 states have (on average 2.2860998650472335) internal successors, (5082), 2232 states have internal predecessors, (5082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:42,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2233 states to 2233 states and 5082 transitions. [2021-11-03 04:19:42,922 INFO L78 Accepts]: Start accepts. Automaton has 2233 states and 5082 transitions. Word has length 17 [2021-11-03 04:19:42,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:42,922 INFO L470 AbstractCegarLoop]: Abstraction has 2233 states and 5082 transitions. [2021-11-03 04:19:42,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:42,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2233 states and 5082 transitions. [2021-11-03 04:19:42,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:19:42,923 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:42,923 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:42,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-03 04:19:42,924 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:19:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:42,924 INFO L85 PathProgramCache]: Analyzing trace with hash 135968639, now seen corresponding path program 29 times [2021-11-03 04:19:42,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:19:42,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564241164] [2021-11-03 04:19:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:42,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:19:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:43,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:43,556 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:19:43,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564241164] [2021-11-03 04:19:43,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564241164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:43,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:43,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:19:43,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852620575] [2021-11-03 04:19:43,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:19:43,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:19:43,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:19:43,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:19:43,558 INFO L87 Difference]: Start difference. First operand 2233 states and 5082 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:47,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:47,317 INFO L93 Difference]: Finished difference Result 3807 states and 8618 transitions. [2021-11-03 04:19:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-03 04:19:47,318 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:19:47,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:47,322 INFO L225 Difference]: With dead ends: 3807 [2021-11-03 04:19:47,322 INFO L226 Difference]: Without dead ends: 3807 [2021-11-03 04:19:47,323 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=290, Invalid=1042, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 04:19:47,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3807 states. [2021-11-03 04:19:47,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3807 to 2236. [2021-11-03 04:19:47,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2226 states have (on average 2.2866127583108717) internal successors, (5090), 2235 states have internal predecessors, (5090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:47,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 5090 transitions. [2021-11-03 04:19:47,358 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 5090 transitions. Word has length 17 [2021-11-03 04:19:47,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:47,358 INFO L470 AbstractCegarLoop]: Abstraction has 2236 states and 5090 transitions. [2021-11-03 04:19:47,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:47,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 5090 transitions. [2021-11-03 04:19:47,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:19:47,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:47,359 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:47,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-03 04:19:47,359 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:19:47,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:47,360 INFO L85 PathProgramCache]: Analyzing trace with hash 146664569, now seen corresponding path program 30 times [2021-11-03 04:19:47,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:19:47,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112128108] [2021-11-03 04:19:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:47,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:19:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:47,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:19:47,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112128108] [2021-11-03 04:19:47,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112128108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:47,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:47,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 04:19:47,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905174321] [2021-11-03 04:19:47,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:19:47,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:19:47,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:19:47,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:19:47,785 INFO L87 Difference]: Start difference. First operand 2236 states and 5090 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:51,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:51,221 INFO L93 Difference]: Finished difference Result 4101 states and 9306 transitions. [2021-11-03 04:19:51,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-03 04:19:51,221 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:19:51,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:51,227 INFO L225 Difference]: With dead ends: 4101 [2021-11-03 04:19:51,227 INFO L226 Difference]: Without dead ends: 4101 [2021-11-03 04:19:51,228 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2021-11-03 04:19:51,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2021-11-03 04:19:51,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 2228. [2021-11-03 04:19:51,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2218 states have (on average 2.286744815148783) internal successors, (5072), 2227 states have internal predecessors, (5072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 5072 transitions. [2021-11-03 04:19:51,281 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 5072 transitions. Word has length 17 [2021-11-03 04:19:51,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:51,281 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 5072 transitions. [2021-11-03 04:19:51,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 5072 transitions. [2021-11-03 04:19:51,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:19:51,283 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:51,284 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:51,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-03 04:19:51,284 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:19:51,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1316568305, now seen corresponding path program 31 times [2021-11-03 04:19:51,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:19:51,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789367432] [2021-11-03 04:19:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:51,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:19:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:51,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:19:51,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789367432] [2021-11-03 04:19:51,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789367432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:51,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:51,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:19:51,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945245149] [2021-11-03 04:19:51,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:19:51,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:19:51,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:19:51,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:19:51,928 INFO L87 Difference]: Start difference. First operand 2228 states and 5072 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:56,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:56,742 INFO L93 Difference]: Finished difference Result 4157 states and 9463 transitions. [2021-11-03 04:19:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-03 04:19:56,742 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:19:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:56,748 INFO L225 Difference]: With dead ends: 4157 [2021-11-03 04:19:56,748 INFO L226 Difference]: Without dead ends: 4157 [2021-11-03 04:19:56,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=331, Invalid=1229, Unknown=0, NotChecked=0, Total=1560 [2021-11-03 04:19:56,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2021-11-03 04:19:56,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 2244. [2021-11-03 04:19:56,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 2234 states have (on average 2.287376902417189) internal successors, (5110), 2243 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:56,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 5110 transitions. [2021-11-03 04:19:56,789 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 5110 transitions. Word has length 17 [2021-11-03 04:19:56,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:56,789 INFO L470 AbstractCegarLoop]: Abstraction has 2244 states and 5110 transitions. [2021-11-03 04:19:56,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:56,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 5110 transitions. [2021-11-03 04:19:56,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:19:56,791 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:56,791 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:56,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-03 04:19:56,791 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:19:56,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:56,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1305872375, now seen corresponding path program 32 times [2021-11-03 04:19:56,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:19:56,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132966717] [2021-11-03 04:19:56,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:56,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:19:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:57,198 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:19:57,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132966717] [2021-11-03 04:19:57,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132966717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:57,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:57,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 04:19:57,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786211842] [2021-11-03 04:19:57,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:19:57,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:19:57,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:19:57,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:19:57,200 INFO L87 Difference]: Start difference. First operand 2244 states and 5110 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:00,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:00,995 INFO L93 Difference]: Finished difference Result 4074 states and 9300 transitions. [2021-11-03 04:20:00,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-03 04:20:00,995 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:20:00,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:01,000 INFO L225 Difference]: With dead ends: 4074 [2021-11-03 04:20:01,001 INFO L226 Difference]: Without dead ends: 4074 [2021-11-03 04:20:01,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=309, Invalid=951, Unknown=0, NotChecked=0, Total=1260 [2021-11-03 04:20:01,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2021-11-03 04:20:01,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 2128. [2021-11-03 04:20:01,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2118 states have (on average 2.2752596789423984) internal successors, (4819), 2127 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 4819 transitions. [2021-11-03 04:20:01,038 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 4819 transitions. Word has length 17 [2021-11-03 04:20:01,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:01,038 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 4819 transitions. [2021-11-03 04:20:01,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:01,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 4819 transitions. [2021-11-03 04:20:01,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:01,039 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:01,039 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:01,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-03 04:20:01,039 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:01,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:01,040 INFO L85 PathProgramCache]: Analyzing trace with hash -234833590, now seen corresponding path program 1 times [2021-11-03 04:20:01,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:01,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486389772] [2021-11-03 04:20:01,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:01,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:01,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:01,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:01,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486389772] [2021-11-03 04:20:01,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486389772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:01,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:01,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 04:20:01,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391331602] [2021-11-03 04:20:01,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:20:01,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:01,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:20:01,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:20:01,207 INFO L87 Difference]: Start difference. First operand 2128 states and 4819 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:02,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:02,103 INFO L93 Difference]: Finished difference Result 2438 states and 5485 transitions. [2021-11-03 04:20:02,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:20:02,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:02,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:02,107 INFO L225 Difference]: With dead ends: 2438 [2021-11-03 04:20:02,107 INFO L226 Difference]: Without dead ends: 2438 [2021-11-03 04:20:02,107 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:20:02,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-11-03 04:20:02,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 2137. [2021-11-03 04:20:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2127 states have (on average 2.2740949694405264) internal successors, (4837), 2136 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:02,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 4837 transitions. [2021-11-03 04:20:02,134 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 4837 transitions. Word has length 18 [2021-11-03 04:20:02,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:02,135 INFO L470 AbstractCegarLoop]: Abstraction has 2137 states and 4837 transitions. [2021-11-03 04:20:02,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:02,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 4837 transitions. [2021-11-03 04:20:02,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:02,136 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:02,136 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:02,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-03 04:20:02,136 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:02,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:02,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1281904542, now seen corresponding path program 2 times [2021-11-03 04:20:02,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:02,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977893664] [2021-11-03 04:20:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:02,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:02,371 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:02,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977893664] [2021-11-03 04:20:02,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977893664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:02,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:02,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 04:20:02,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026475370] [2021-11-03 04:20:02,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:20:02,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:02,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:20:02,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:20:02,372 INFO L87 Difference]: Start difference. First operand 2137 states and 4837 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:03,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:03,677 INFO L93 Difference]: Finished difference Result 2747 states and 6158 transitions. [2021-11-03 04:20:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 04:20:03,677 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:03,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:03,681 INFO L225 Difference]: With dead ends: 2747 [2021-11-03 04:20:03,681 INFO L226 Difference]: Without dead ends: 2747 [2021-11-03 04:20:03,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2021-11-03 04:20:03,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2021-11-03 04:20:03,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2239. [2021-11-03 04:20:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2239 states, 2229 states have (on average 2.2763571108120235) internal successors, (5074), 2238 states have internal predecessors, (5074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:03,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 5074 transitions. [2021-11-03 04:20:03,715 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 5074 transitions. Word has length 18 [2021-11-03 04:20:03,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:03,715 INFO L470 AbstractCegarLoop]: Abstraction has 2239 states and 5074 transitions. [2021-11-03 04:20:03,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:03,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 5074 transitions. [2021-11-03 04:20:03,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:03,717 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:03,717 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:03,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-03 04:20:03,717 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:03,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:03,718 INFO L85 PathProgramCache]: Analyzing trace with hash 406074810, now seen corresponding path program 3 times [2021-11-03 04:20:03,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:03,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223745356] [2021-11-03 04:20:03,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:03,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:03,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:03,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:03,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223745356] [2021-11-03 04:20:03,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223745356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:03,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:03,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 04:20:03,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690634992] [2021-11-03 04:20:03,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 04:20:03,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:03,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 04:20:03,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:20:03,972 INFO L87 Difference]: Start difference. First operand 2239 states and 5074 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:06,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:06,511 INFO L93 Difference]: Finished difference Result 3289 states and 7353 transitions. [2021-11-03 04:20:06,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 04:20:06,512 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:06,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:06,516 INFO L225 Difference]: With dead ends: 3289 [2021-11-03 04:20:06,516 INFO L226 Difference]: Without dead ends: 3289 [2021-11-03 04:20:06,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=298, Invalid=632, Unknown=0, NotChecked=0, Total=930 [2021-11-03 04:20:06,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-11-03 04:20:06,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2249. [2021-11-03 04:20:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2249 states, 2239 states have (on average 2.27422956677088) internal successors, (5092), 2248 states have internal predecessors, (5092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 5092 transitions. [2021-11-03 04:20:06,585 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 5092 transitions. Word has length 18 [2021-11-03 04:20:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:06,585 INFO L470 AbstractCegarLoop]: Abstraction has 2249 states and 5092 transitions. [2021-11-03 04:20:06,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 5092 transitions. [2021-11-03 04:20:06,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:06,587 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:06,587 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:06,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-03 04:20:06,587 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:06,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash -396308350, now seen corresponding path program 4 times [2021-11-03 04:20:06,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:06,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077538391] [2021-11-03 04:20:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:06,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:06,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:06,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077538391] [2021-11-03 04:20:06,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077538391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:06,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:06,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:20:06,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13677121] [2021-11-03 04:20:06,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:20:06,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:06,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:20:06,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:20:06,957 INFO L87 Difference]: Start difference. First operand 2249 states and 5092 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:10,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:10,408 INFO L93 Difference]: Finished difference Result 3343 states and 7461 transitions. [2021-11-03 04:20:10,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-03 04:20:10,409 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:10,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:10,414 INFO L225 Difference]: With dead ends: 3343 [2021-11-03 04:20:10,414 INFO L226 Difference]: Without dead ends: 3343 [2021-11-03 04:20:10,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=377, Invalid=883, Unknown=0, NotChecked=0, Total=1260 [2021-11-03 04:20:10,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2021-11-03 04:20:10,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 2255. [2021-11-03 04:20:10,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2245 states have (on average 2.273496659242762) internal successors, (5104), 2254 states have internal predecessors, (5104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 5104 transitions. [2021-11-03 04:20:10,453 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 5104 transitions. Word has length 18 [2021-11-03 04:20:10,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:10,453 INFO L470 AbstractCegarLoop]: Abstraction has 2255 states and 5104 transitions. [2021-11-03 04:20:10,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:10,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 5104 transitions. [2021-11-03 04:20:10,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:10,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:10,454 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:10,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-03 04:20:10,455 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:10,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:10,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1936622512, now seen corresponding path program 5 times [2021-11-03 04:20:10,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:10,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186550788] [2021-11-03 04:20:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:10,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:10,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:10,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186550788] [2021-11-03 04:20:10,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186550788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:10,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:10,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 04:20:10,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234368451] [2021-11-03 04:20:10,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:20:10,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:10,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:20:10,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:20:10,794 INFO L87 Difference]: Start difference. First operand 2255 states and 5104 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:13,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:13,906 INFO L93 Difference]: Finished difference Result 3373 states and 7521 transitions. [2021-11-03 04:20:13,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-03 04:20:13,906 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:13,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:13,911 INFO L225 Difference]: With dead ends: 3373 [2021-11-03 04:20:13,912 INFO L226 Difference]: Without dead ends: 3373 [2021-11-03 04:20:13,912 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=386, Invalid=946, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 04:20:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2021-11-03 04:20:13,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 2251. [2021-11-03 04:20:13,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2241 states have (on average 2.2739848282016957) internal successors, (5096), 2250 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 5096 transitions. [2021-11-03 04:20:13,964 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 5096 transitions. Word has length 18 [2021-11-03 04:20:13,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:13,964 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 5096 transitions. [2021-11-03 04:20:13,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:13,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 5096 transitions. [2021-11-03 04:20:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:13,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:13,965 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:13,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-03 04:20:13,966 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:13,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:13,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1922812942, now seen corresponding path program 6 times [2021-11-03 04:20:13,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:13,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144530834] [2021-11-03 04:20:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:13,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:14,379 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:14,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144530834] [2021-11-03 04:20:14,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144530834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:14,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:14,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 04:20:14,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549784901] [2021-11-03 04:20:14,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:20:14,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:14,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:20:14,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:20:14,381 INFO L87 Difference]: Start difference. First operand 2251 states and 5096 transitions. Second operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:19,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:19,540 INFO L93 Difference]: Finished difference Result 4234 states and 9421 transitions. [2021-11-03 04:20:19,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-03 04:20:19,540 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:19,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:19,581 INFO L225 Difference]: With dead ends: 4234 [2021-11-03 04:20:19,581 INFO L226 Difference]: Without dead ends: 4234 [2021-11-03 04:20:19,581 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1167, Invalid=3123, Unknown=0, NotChecked=0, Total=4290 [2021-11-03 04:20:19,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2021-11-03 04:20:19,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 2241. [2021-11-03 04:20:19,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 2231 states have (on average 2.274764679515912) internal successors, (5075), 2240 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 5075 transitions. [2021-11-03 04:20:19,620 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 5075 transitions. Word has length 18 [2021-11-03 04:20:19,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:19,620 INFO L470 AbstractCegarLoop]: Abstraction has 2241 states and 5075 transitions. [2021-11-03 04:20:19,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:19,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 5075 transitions. [2021-11-03 04:20:19,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:19,622 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:19,622 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:19,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-03 04:20:19,622 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:19,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:19,623 INFO L85 PathProgramCache]: Analyzing trace with hash 260457414, now seen corresponding path program 7 times [2021-11-03 04:20:19,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:19,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228068223] [2021-11-03 04:20:19,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:19,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:19,914 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:19,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228068223] [2021-11-03 04:20:19,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228068223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:19,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:19,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 04:20:19,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121724125] [2021-11-03 04:20:19,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 04:20:19,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:19,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 04:20:19,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:20:19,915 INFO L87 Difference]: Start difference. First operand 2241 states and 5075 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:22,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:22,609 INFO L93 Difference]: Finished difference Result 3670 states and 8133 transitions. [2021-11-03 04:20:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 04:20:22,610 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:22,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:22,615 INFO L225 Difference]: With dead ends: 3670 [2021-11-03 04:20:22,615 INFO L226 Difference]: Without dead ends: 3670 [2021-11-03 04:20:22,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=193, Invalid=407, Unknown=0, NotChecked=0, Total=600 [2021-11-03 04:20:22,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2021-11-03 04:20:22,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 2235. [2021-11-03 04:20:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 2225 states have (on average 2.2714606741573036) internal successors, (5054), 2234 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:22,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 5054 transitions. [2021-11-03 04:20:22,651 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 5054 transitions. Word has length 18 [2021-11-03 04:20:22,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:22,652 INFO L470 AbstractCegarLoop]: Abstraction has 2235 states and 5054 transitions. [2021-11-03 04:20:22,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:22,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 5054 transitions. [2021-11-03 04:20:22,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:22,653 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:22,653 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:22,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-03 04:20:22,653 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:22,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:22,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1715388590, now seen corresponding path program 8 times [2021-11-03 04:20:22,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:22,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198441411] [2021-11-03 04:20:22,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:22,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:23,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:23,013 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:23,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198441411] [2021-11-03 04:20:23,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198441411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:23,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:23,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:20:23,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346515191] [2021-11-03 04:20:23,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:20:23,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:23,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:20:23,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:20:23,014 INFO L87 Difference]: Start difference. First operand 2235 states and 5054 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:27,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:27,359 INFO L93 Difference]: Finished difference Result 4090 states and 9055 transitions. [2021-11-03 04:20:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-03 04:20:27,359 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:27,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:27,364 INFO L225 Difference]: With dead ends: 4090 [2021-11-03 04:20:27,364 INFO L226 Difference]: Without dead ends: 4090 [2021-11-03 04:20:27,365 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1212, Invalid=3344, Unknown=0, NotChecked=0, Total=4556 [2021-11-03 04:20:27,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2021-11-03 04:20:27,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 2223. [2021-11-03 04:20:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 2213 states have (on average 2.272028920018075) internal successors, (5028), 2222 states have internal predecessors, (5028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 5028 transitions. [2021-11-03 04:20:27,410 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 5028 transitions. Word has length 18 [2021-11-03 04:20:27,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:27,411 INFO L470 AbstractCegarLoop]: Abstraction has 2223 states and 5028 transitions. [2021-11-03 04:20:27,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 5028 transitions. [2021-11-03 04:20:27,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:27,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:27,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:27,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-03 04:20:27,413 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:27,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:27,413 INFO L85 PathProgramCache]: Analyzing trace with hash -200825228, now seen corresponding path program 9 times [2021-11-03 04:20:27,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:27,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013563286] [2021-11-03 04:20:27,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:27,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:27,815 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:27,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013563286] [2021-11-03 04:20:27,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013563286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:27,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:27,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 04:20:27,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523130632] [2021-11-03 04:20:27,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:20:27,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:27,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:20:27,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:20:27,817 INFO L87 Difference]: Start difference. First operand 2223 states and 5028 transitions. Second operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:32,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:32,810 INFO L93 Difference]: Finished difference Result 3973 states and 8809 transitions. [2021-11-03 04:20:32,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-03 04:20:32,810 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:32,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:32,815 INFO L225 Difference]: With dead ends: 3973 [2021-11-03 04:20:32,815 INFO L226 Difference]: Without dead ends: 3973 [2021-11-03 04:20:32,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1295, Invalid=3817, Unknown=0, NotChecked=0, Total=5112 [2021-11-03 04:20:32,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3973 states. [2021-11-03 04:20:32,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3973 to 2217. [2021-11-03 04:20:32,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2217 states, 2207 states have (on average 2.27231536021749) internal successors, (5015), 2216 states have internal predecessors, (5015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 5015 transitions. [2021-11-03 04:20:32,857 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 5015 transitions. Word has length 18 [2021-11-03 04:20:32,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:32,857 INFO L470 AbstractCegarLoop]: Abstraction has 2217 states and 5015 transitions. [2021-11-03 04:20:32,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 5015 transitions. [2021-11-03 04:20:32,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:32,858 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:32,858 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:32,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-03 04:20:32,859 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:32,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:32,859 INFO L85 PathProgramCache]: Analyzing trace with hash 159942608, now seen corresponding path program 10 times [2021-11-03 04:20:32,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:32,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409345164] [2021-11-03 04:20:32,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:32,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:33,197 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:33,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409345164] [2021-11-03 04:20:33,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409345164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:33,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:33,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 04:20:33,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795407674] [2021-11-03 04:20:33,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:20:33,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:33,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:20:33,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:20:33,198 INFO L87 Difference]: Start difference. First operand 2217 states and 5015 transitions. Second operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:39,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:39,185 INFO L93 Difference]: Finished difference Result 3883 states and 8620 transitions. [2021-11-03 04:20:39,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-03 04:20:39,185 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:39,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:39,191 INFO L225 Difference]: With dead ends: 3883 [2021-11-03 04:20:39,191 INFO L226 Difference]: Without dead ends: 3883 [2021-11-03 04:20:39,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1448, Invalid=4558, Unknown=0, NotChecked=0, Total=6006 [2021-11-03 04:20:39,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2021-11-03 04:20:39,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 2201. [2021-11-03 04:20:39,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 2191 states have (on average 2.272934732998631) internal successors, (4980), 2200 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:39,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 4980 transitions. [2021-11-03 04:20:39,233 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 4980 transitions. Word has length 18 [2021-11-03 04:20:39,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:39,233 INFO L470 AbstractCegarLoop]: Abstraction has 2201 states and 4980 transitions. [2021-11-03 04:20:39,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:39,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 4980 transitions. [2021-11-03 04:20:39,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:39,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:39,234 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:39,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-03 04:20:39,235 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:39,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:39,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2125587414, now seen corresponding path program 11 times [2021-11-03 04:20:39,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:39,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762957825] [2021-11-03 04:20:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:39,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:39,464 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:39,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762957825] [2021-11-03 04:20:39,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762957825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:39,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:39,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 04:20:39,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405203739] [2021-11-03 04:20:39,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:20:39,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:39,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:20:39,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:20:39,466 INFO L87 Difference]: Start difference. First operand 2201 states and 4980 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:40,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:40,879 INFO L93 Difference]: Finished difference Result 2528 states and 5686 transitions. [2021-11-03 04:20:40,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:20:40,879 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:40,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:40,882 INFO L225 Difference]: With dead ends: 2528 [2021-11-03 04:20:40,883 INFO L226 Difference]: Without dead ends: 2528 [2021-11-03 04:20:40,883 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=273, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:20:40,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2021-11-03 04:20:40,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 2210. [2021-11-03 04:20:40,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2200 states have (on average 2.2722727272727274) internal successors, (4999), 2209 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:40,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 4999 transitions. [2021-11-03 04:20:40,914 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 4999 transitions. Word has length 18 [2021-11-03 04:20:40,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:40,915 INFO L470 AbstractCegarLoop]: Abstraction has 2210 states and 4999 transitions. [2021-11-03 04:20:40,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:40,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 4999 transitions. [2021-11-03 04:20:40,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:40,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:40,916 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:40,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-03 04:20:40,916 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:40,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:40,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1323204254, now seen corresponding path program 12 times [2021-11-03 04:20:40,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:40,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149154966] [2021-11-03 04:20:40,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:40,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:41,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:41,183 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:41,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149154966] [2021-11-03 04:20:41,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149154966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:41,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:41,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 04:20:41,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111665479] [2021-11-03 04:20:41,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:20:41,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:41,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:20:41,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:20:41,184 INFO L87 Difference]: Start difference. First operand 2210 states and 4999 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:42,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:42,700 INFO L93 Difference]: Finished difference Result 2744 states and 6141 transitions. [2021-11-03 04:20:42,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:20:42,701 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:42,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:42,704 INFO L225 Difference]: With dead ends: 2744 [2021-11-03 04:20:42,704 INFO L226 Difference]: Without dead ends: 2744 [2021-11-03 04:20:42,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:20:42,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2021-11-03 04:20:42,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2231. [2021-11-03 04:20:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 2221 states have (on average 2.271049076992346) internal successors, (5044), 2230 states have internal predecessors, (5044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:42,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 5044 transitions. [2021-11-03 04:20:42,735 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 5044 transitions. Word has length 18 [2021-11-03 04:20:42,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:42,735 INFO L470 AbstractCegarLoop]: Abstraction has 2231 states and 5044 transitions. [2021-11-03 04:20:42,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:42,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 5044 transitions. [2021-11-03 04:20:42,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:42,737 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:42,737 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:42,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-03 04:20:42,737 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:42,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:42,737 INFO L85 PathProgramCache]: Analyzing trace with hash -652641750, now seen corresponding path program 13 times [2021-11-03 04:20:42,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:42,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439093265] [2021-11-03 04:20:42,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:42,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:43,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:43,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:43,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439093265] [2021-11-03 04:20:43,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439093265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:43,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:43,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 04:20:43,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767019559] [2021-11-03 04:20:43,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:20:43,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:43,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:20:43,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:20:43,086 INFO L87 Difference]: Start difference. First operand 2231 states and 5044 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:46,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:46,397 INFO L93 Difference]: Finished difference Result 2944 states and 6566 transitions. [2021-11-03 04:20:46,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-03 04:20:46,398 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:46,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:46,402 INFO L225 Difference]: With dead ends: 2944 [2021-11-03 04:20:46,402 INFO L226 Difference]: Without dead ends: 2944 [2021-11-03 04:20:46,402 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=459, Invalid=1181, Unknown=0, NotChecked=0, Total=1640 [2021-11-03 04:20:46,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2021-11-03 04:20:46,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 2219. [2021-11-03 04:20:46,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2219 states, 2209 states have (on average 2.2716161158895427) internal successors, (5018), 2218 states have internal predecessors, (5018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:46,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 5018 transitions. [2021-11-03 04:20:46,440 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 5018 transitions. Word has length 18 [2021-11-03 04:20:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:46,440 INFO L470 AbstractCegarLoop]: Abstraction has 2219 states and 5018 transitions. [2021-11-03 04:20:46,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:46,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 5018 transitions. [2021-11-03 04:20:46,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:46,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:46,441 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:46,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-03 04:20:46,442 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:46,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:46,442 INFO L85 PathProgramCache]: Analyzing trace with hash 861921612, now seen corresponding path program 14 times [2021-11-03 04:20:46,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:46,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786141698] [2021-11-03 04:20:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:46,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:46,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:46,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:46,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786141698] [2021-11-03 04:20:46,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786141698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:46,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:46,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:20:46,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407630364] [2021-11-03 04:20:46,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:20:46,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:46,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:20:46,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:20:46,760 INFO L87 Difference]: Start difference. First operand 2219 states and 5018 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:50,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:50,146 INFO L93 Difference]: Finished difference Result 3001 states and 6693 transitions. [2021-11-03 04:20:50,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-03 04:20:50,147 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:50,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:50,151 INFO L225 Difference]: With dead ends: 3001 [2021-11-03 04:20:50,151 INFO L226 Difference]: Without dead ends: 3001 [2021-11-03 04:20:50,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=488, Invalid=1318, Unknown=0, NotChecked=0, Total=1806 [2021-11-03 04:20:50,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2021-11-03 04:20:50,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2220. [2021-11-03 04:20:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 2210 states have (on average 2.271493212669683) internal successors, (5020), 2219 states have internal predecessors, (5020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:50,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 5020 transitions. [2021-11-03 04:20:50,191 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 5020 transitions. Word has length 18 [2021-11-03 04:20:50,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:50,192 INFO L470 AbstractCegarLoop]: Abstraction has 2220 states and 5020 transitions. [2021-11-03 04:20:50,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:50,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 5020 transitions. [2021-11-03 04:20:50,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:50,193 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:50,193 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:50,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-03 04:20:50,193 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:50,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:50,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1222689448, now seen corresponding path program 15 times [2021-11-03 04:20:50,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:50,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666531006] [2021-11-03 04:20:50,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:50,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:50,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:50,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666531006] [2021-11-03 04:20:50,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666531006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:50,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:50,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:20:50,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300210006] [2021-11-03 04:20:50,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:20:50,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:50,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:20:50,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:20:50,584 INFO L87 Difference]: Start difference. First operand 2220 states and 5020 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:54,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:54,959 INFO L93 Difference]: Finished difference Result 3007 states and 6705 transitions. [2021-11-03 04:20:54,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 04:20:54,960 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:54,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:54,964 INFO L225 Difference]: With dead ends: 3007 [2021-11-03 04:20:54,964 INFO L226 Difference]: Without dead ends: 3007 [2021-11-03 04:20:54,964 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=511, Invalid=1381, Unknown=0, NotChecked=0, Total=1892 [2021-11-03 04:20:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2021-11-03 04:20:55,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 2217. [2021-11-03 04:20:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2217 states, 2207 states have (on average 2.271862256456729) internal successors, (5014), 2216 states have internal predecessors, (5014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 5014 transitions. [2021-11-03 04:20:55,013 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 5014 transitions. Word has length 18 [2021-11-03 04:20:55,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:55,013 INFO L470 AbstractCegarLoop]: Abstraction has 2217 states and 5014 transitions. [2021-11-03 04:20:55,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:55,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 5014 transitions. [2021-11-03 04:20:55,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:55,015 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:55,015 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:55,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-03 04:20:55,015 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:55,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:55,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1265119266, now seen corresponding path program 16 times [2021-11-03 04:20:55,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:55,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542458490] [2021-11-03 04:20:55,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:55,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:55,267 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:20:55,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542458490] [2021-11-03 04:20:55,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542458490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:55,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:55,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:20:55,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645688130] [2021-11-03 04:20:55,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:20:55,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:20:55,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:20:55,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:20:55,268 INFO L87 Difference]: Start difference. First operand 2217 states and 5014 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:59,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:59,758 INFO L93 Difference]: Finished difference Result 3036 states and 6767 transitions. [2021-11-03 04:20:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-03 04:20:59,758 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:20:59,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:59,762 INFO L225 Difference]: With dead ends: 3036 [2021-11-03 04:20:59,762 INFO L226 Difference]: Without dead ends: 3036 [2021-11-03 04:20:59,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=782, Invalid=2188, Unknown=0, NotChecked=0, Total=2970 [2021-11-03 04:20:59,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2021-11-03 04:20:59,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 2221. [2021-11-03 04:20:59,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2221 states, 2211 states have (on average 2.271370420624152) internal successors, (5022), 2220 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 5022 transitions. [2021-11-03 04:20:59,798 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 5022 transitions. Word has length 18 [2021-11-03 04:20:59,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:59,798 INFO L470 AbstractCegarLoop]: Abstraction has 2221 states and 5022 transitions. [2021-11-03 04:20:59,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:59,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 5022 transitions. [2021-11-03 04:20:59,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:20:59,799 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:59,799 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:20:59,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-03 04:20:59,799 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:20:59,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:59,800 INFO L85 PathProgramCache]: Analyzing trace with hash -780689430, now seen corresponding path program 17 times [2021-11-03 04:20:59,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:20:59,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759928071] [2021-11-03 04:20:59,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:59,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:20:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:00,102 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:00,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759928071] [2021-11-03 04:21:00,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759928071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:00,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:00,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:21:00,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485749477] [2021-11-03 04:21:00,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:21:00,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:00,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:21:00,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:21:00,104 INFO L87 Difference]: Start difference. First operand 2221 states and 5022 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:04,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:04,070 INFO L93 Difference]: Finished difference Result 2931 states and 6539 transitions. [2021-11-03 04:21:04,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 04:21:04,070 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:21:04,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:04,075 INFO L225 Difference]: With dead ends: 2931 [2021-11-03 04:21:04,075 INFO L226 Difference]: Without dead ends: 2931 [2021-11-03 04:21:04,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=518, Invalid=1462, Unknown=0, NotChecked=0, Total=1980 [2021-11-03 04:21:04,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2021-11-03 04:21:04,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 2215. [2021-11-03 04:21:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 2205 states have (on average 2.271655328798186) internal successors, (5009), 2214 states have internal predecessors, (5009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:04,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 5009 transitions. [2021-11-03 04:21:04,113 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 5009 transitions. Word has length 18 [2021-11-03 04:21:04,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:04,113 INFO L470 AbstractCegarLoop]: Abstraction has 2215 states and 5009 transitions. [2021-11-03 04:21:04,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:04,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 5009 transitions. [2021-11-03 04:21:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:21:04,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:04,114 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:04,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-03 04:21:04,114 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:21:04,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:04,115 INFO L85 PathProgramCache]: Analyzing trace with hash -419921594, now seen corresponding path program 18 times [2021-11-03 04:21:04,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:04,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320486430] [2021-11-03 04:21:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:04,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:04,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:04,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320486430] [2021-11-03 04:21:04,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320486430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:04,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:04,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:21:04,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875020013] [2021-11-03 04:21:04,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:21:04,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:04,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:21:04,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:21:04,462 INFO L87 Difference]: Start difference. First operand 2215 states and 5009 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:08,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:08,812 INFO L93 Difference]: Finished difference Result 2975 states and 6638 transitions. [2021-11-03 04:21:08,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-03 04:21:08,812 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:21:08,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:08,816 INFO L225 Difference]: With dead ends: 2975 [2021-11-03 04:21:08,816 INFO L226 Difference]: Without dead ends: 2975 [2021-11-03 04:21:08,817 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=540, Invalid=1530, Unknown=0, NotChecked=0, Total=2070 [2021-11-03 04:21:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2021-11-03 04:21:08,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2207. [2021-11-03 04:21:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 2197 states have (on average 2.272189349112426) internal successors, (4992), 2206 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:08,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 4992 transitions. [2021-11-03 04:21:08,848 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 4992 transitions. Word has length 18 [2021-11-03 04:21:08,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:08,848 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 4992 transitions. [2021-11-03 04:21:08,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:08,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 4992 transitions. [2021-11-03 04:21:08,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:21:08,849 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:08,850 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:08,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-03 04:21:08,850 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:21:08,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:08,850 INFO L85 PathProgramCache]: Analyzing trace with hash -645839798, now seen corresponding path program 19 times [2021-11-03 04:21:08,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:08,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590766721] [2021-11-03 04:21:08,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:08,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:09,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:09,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:09,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590766721] [2021-11-03 04:21:09,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590766721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:09,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:09,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 04:21:09,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415458146] [2021-11-03 04:21:09,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:21:09,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:09,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:21:09,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:21:09,109 INFO L87 Difference]: Start difference. First operand 2207 states and 4992 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:10,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:10,906 INFO L93 Difference]: Finished difference Result 2550 states and 5727 transitions. [2021-11-03 04:21:10,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:21:10,906 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:21:10,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:10,910 INFO L225 Difference]: With dead ends: 2550 [2021-11-03 04:21:10,910 INFO L226 Difference]: Without dead ends: 2550 [2021-11-03 04:21:10,910 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:21:10,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2021-11-03 04:21:10,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2200. [2021-11-03 04:21:10,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 2190 states have (on average 2.271232876712329) internal successors, (4974), 2199 states have internal predecessors, (4974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:10,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 4974 transitions. [2021-11-03 04:21:10,955 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 4974 transitions. Word has length 18 [2021-11-03 04:21:10,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:10,956 INFO L470 AbstractCegarLoop]: Abstraction has 2200 states and 4974 transitions. [2021-11-03 04:21:10,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:10,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 4974 transitions. [2021-11-03 04:21:10,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:21:10,957 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:10,957 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:10,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-03 04:21:10,957 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:21:10,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:10,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1448222958, now seen corresponding path program 20 times [2021-11-03 04:21:10,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:10,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234804986] [2021-11-03 04:21:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:10,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:11,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:11,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:11,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234804986] [2021-11-03 04:21:11,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234804986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:11,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:11,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 04:21:11,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742063782] [2021-11-03 04:21:11,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 04:21:11,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:11,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 04:21:11,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:21:11,274 INFO L87 Difference]: Start difference. First operand 2200 states and 4974 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:13,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:13,405 INFO L93 Difference]: Finished difference Result 2569 states and 5765 transitions. [2021-11-03 04:21:13,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:21:13,406 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:21:13,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:13,411 INFO L225 Difference]: With dead ends: 2569 [2021-11-03 04:21:13,411 INFO L226 Difference]: Without dead ends: 2569 [2021-11-03 04:21:13,412 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:21:13,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2021-11-03 04:21:13,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 2204. [2021-11-03 04:21:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 2194 states have (on average 2.2707383773928895) internal successors, (4982), 2203 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 4982 transitions. [2021-11-03 04:21:13,473 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 4982 transitions. Word has length 18 [2021-11-03 04:21:13,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:13,473 INFO L470 AbstractCegarLoop]: Abstraction has 2204 states and 4982 transitions. [2021-11-03 04:21:13,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:13,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 4982 transitions. [2021-11-03 04:21:13,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:21:13,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:13,475 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:13,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-03 04:21:13,475 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:21:13,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:13,476 INFO L85 PathProgramCache]: Analyzing trace with hash 884707904, now seen corresponding path program 21 times [2021-11-03 04:21:13,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:13,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673229607] [2021-11-03 04:21:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:13,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:13,835 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:13,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673229607] [2021-11-03 04:21:13,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673229607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:13,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:13,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:21:13,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092108859] [2021-11-03 04:21:13,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:21:13,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:13,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:21:13,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:21:13,837 INFO L87 Difference]: Start difference. First operand 2204 states and 4982 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:16,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:16,243 INFO L93 Difference]: Finished difference Result 2589 states and 5805 transitions. [2021-11-03 04:21:16,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:21:16,243 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:21:16,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:16,247 INFO L225 Difference]: With dead ends: 2589 [2021-11-03 04:21:16,247 INFO L226 Difference]: Without dead ends: 2589 [2021-11-03 04:21:16,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:21:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2021-11-03 04:21:16,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2203. [2021-11-03 04:21:16,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2193 states have (on average 2.270861833105335) internal successors, (4980), 2202 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 4980 transitions. [2021-11-03 04:21:16,296 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 4980 transitions. Word has length 18 [2021-11-03 04:21:16,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:16,297 INFO L470 AbstractCegarLoop]: Abstraction has 2203 states and 4980 transitions. [2021-11-03 04:21:16,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:16,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 4980 transitions. [2021-11-03 04:21:16,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:21:16,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:16,299 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:16,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-03 04:21:16,299 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:21:16,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:16,299 INFO L85 PathProgramCache]: Analyzing trace with hash 870898334, now seen corresponding path program 22 times [2021-11-03 04:21:16,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:16,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764449524] [2021-11-03 04:21:16,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:16,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:16,604 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:16,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764449524] [2021-11-03 04:21:16,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764449524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:16,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:16,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:21:16,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672221737] [2021-11-03 04:21:16,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:21:16,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:16,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:21:16,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:21:16,606 INFO L87 Difference]: Start difference. First operand 2203 states and 4980 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:19,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:19,757 INFO L93 Difference]: Finished difference Result 2867 states and 6408 transitions. [2021-11-03 04:21:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 04:21:19,758 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:21:19,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:19,761 INFO L225 Difference]: With dead ends: 2867 [2021-11-03 04:21:19,762 INFO L226 Difference]: Without dead ends: 2867 [2021-11-03 04:21:19,762 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=463, Invalid=1607, Unknown=0, NotChecked=0, Total=2070 [2021-11-03 04:21:19,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2021-11-03 04:21:19,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 2256. [2021-11-03 04:21:19,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2246 states have (on average 2.271593944790739) internal successors, (5102), 2255 states have internal predecessors, (5102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:19,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 5102 transitions. [2021-11-03 04:21:19,794 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 5102 transitions. Word has length 18 [2021-11-03 04:21:19,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:19,795 INFO L470 AbstractCegarLoop]: Abstraction has 2256 states and 5102 transitions. [2021-11-03 04:21:19,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:19,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 5102 transitions. [2021-11-03 04:21:19,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:21:19,796 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:19,796 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:19,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-03 04:21:19,796 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:21:19,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:19,797 INFO L85 PathProgramCache]: Analyzing trace with hash -791457194, now seen corresponding path program 23 times [2021-11-03 04:21:19,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:19,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176354389] [2021-11-03 04:21:19,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:19,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:20,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:20,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176354389] [2021-11-03 04:21:20,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176354389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:20,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:20,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 04:21:20,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147309302] [2021-11-03 04:21:20,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:21:20,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:20,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:21:20,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:21:20,068 INFO L87 Difference]: Start difference. First operand 2256 states and 5102 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:21,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:21,979 INFO L93 Difference]: Finished difference Result 2723 states and 6078 transitions. [2021-11-03 04:21:21,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:21:21,980 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:21:21,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:21,983 INFO L225 Difference]: With dead ends: 2723 [2021-11-03 04:21:21,983 INFO L226 Difference]: Without dead ends: 2723 [2021-11-03 04:21:21,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:21:21,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2021-11-03 04:21:22,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2179. [2021-11-03 04:21:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2179 states, 2169 states have (on average 2.2701705855232825) internal successors, (4924), 2178 states have internal predecessors, (4924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:22,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 4924 transitions. [2021-11-03 04:21:22,010 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 4924 transitions. Word has length 18 [2021-11-03 04:21:22,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:22,010 INFO L470 AbstractCegarLoop]: Abstraction has 2179 states and 4924 transitions. [2021-11-03 04:21:22,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:22,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 4924 transitions. [2021-11-03 04:21:22,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:21:22,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:22,011 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:22,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-03 04:21:22,011 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:21:22,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1527664098, now seen corresponding path program 24 times [2021-11-03 04:21:22,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:22,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257659457] [2021-11-03 04:21:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:22,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:22,252 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:22,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257659457] [2021-11-03 04:21:22,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257659457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:22,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:22,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 04:21:22,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438289777] [2021-11-03 04:21:22,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:21:22,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:22,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:21:22,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:21:22,254 INFO L87 Difference]: Start difference. First operand 2179 states and 4924 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:25,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:25,602 INFO L93 Difference]: Finished difference Result 2908 states and 6483 transitions. [2021-11-03 04:21:25,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-03 04:21:25,603 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:21:25,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:25,606 INFO L225 Difference]: With dead ends: 2908 [2021-11-03 04:21:25,606 INFO L226 Difference]: Without dead ends: 2908 [2021-11-03 04:21:25,606 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=496, Invalid=1760, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 04:21:25,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2021-11-03 04:21:25,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2167. [2021-11-03 04:21:25,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2157 states have (on average 2.270746407046824) internal successors, (4898), 2166 states have internal predecessors, (4898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:25,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 4898 transitions. [2021-11-03 04:21:25,636 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 4898 transitions. Word has length 18 [2021-11-03 04:21:25,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:25,636 INFO L470 AbstractCegarLoop]: Abstraction has 2167 states and 4898 transitions. [2021-11-03 04:21:25,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:25,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 4898 transitions. [2021-11-03 04:21:25,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:21:25,637 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:25,637 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:25,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-03 04:21:25,637 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:21:25,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:25,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1252739836, now seen corresponding path program 25 times [2021-11-03 04:21:25,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:25,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860715694] [2021-11-03 04:21:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:25,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:25,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:25,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860715694] [2021-11-03 04:21:25,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860715694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:25,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:25,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:21:25,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691964537] [2021-11-03 04:21:25,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:21:25,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:25,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:21:25,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:21:25,901 INFO L87 Difference]: Start difference. First operand 2167 states and 4898 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:30,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:30,305 INFO L93 Difference]: Finished difference Result 2869 states and 6401 transitions. [2021-11-03 04:21:30,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-03 04:21:30,306 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:21:30,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:30,309 INFO L225 Difference]: With dead ends: 2869 [2021-11-03 04:21:30,309 INFO L226 Difference]: Without dead ends: 2869 [2021-11-03 04:21:30,310 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=513, Invalid=1937, Unknown=0, NotChecked=0, Total=2450 [2021-11-03 04:21:30,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2021-11-03 04:21:30,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2161. [2021-11-03 04:21:30,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 2151 states have (on average 2.271036727103673) internal successors, (4885), 2160 states have internal predecessors, (4885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:30,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 4885 transitions. [2021-11-03 04:21:30,342 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 4885 transitions. Word has length 18 [2021-11-03 04:21:30,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:30,342 INFO L470 AbstractCegarLoop]: Abstraction has 2161 states and 4885 transitions. [2021-11-03 04:21:30,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:30,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 4885 transitions. [2021-11-03 04:21:30,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:21:30,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:30,343 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:30,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-03 04:21:30,343 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:21:30,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:30,344 INFO L85 PathProgramCache]: Analyzing trace with hash -891972000, now seen corresponding path program 26 times [2021-11-03 04:21:30,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:30,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775436717] [2021-11-03 04:21:30,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:30,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:30,704 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:30,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775436717] [2021-11-03 04:21:30,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775436717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:30,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:30,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:21:30,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759743813] [2021-11-03 04:21:30,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:21:30,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:30,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:21:30,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:21:30,706 INFO L87 Difference]: Start difference. First operand 2161 states and 4885 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:34,420 INFO L93 Difference]: Finished difference Result 2839 states and 6338 transitions. [2021-11-03 04:21:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-03 04:21:34,421 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:21:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:34,425 INFO L225 Difference]: With dead ends: 2839 [2021-11-03 04:21:34,425 INFO L226 Difference]: Without dead ends: 2839 [2021-11-03 04:21:34,425 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=534, Invalid=2118, Unknown=0, NotChecked=0, Total=2652 [2021-11-03 04:21:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2021-11-03 04:21:34,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 2150. [2021-11-03 04:21:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2140 states have (on average 2.27196261682243) internal successors, (4862), 2149 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:34,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 4862 transitions. [2021-11-03 04:21:34,460 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 4862 transitions. Word has length 18 [2021-11-03 04:21:34,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:34,461 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 4862 transitions. [2021-11-03 04:21:34,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:34,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 4862 transitions. [2021-11-03 04:21:34,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:21:34,462 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:34,462 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:34,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-03 04:21:34,462 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:21:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:34,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1640392299, now seen corresponding path program 1 times [2021-11-03 04:21:34,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:34,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097095101] [2021-11-03 04:21:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:34,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:34,828 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:34,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097095101] [2021-11-03 04:21:34,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097095101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:34,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:34,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 04:21:34,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150390149] [2021-11-03 04:21:34,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:21:34,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:34,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:21:34,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:21:34,829 INFO L87 Difference]: Start difference. First operand 2150 states and 4862 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:36,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:36,884 INFO L93 Difference]: Finished difference Result 3494 states and 7875 transitions. [2021-11-03 04:21:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 04:21:36,885 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:21:36,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:36,890 INFO L225 Difference]: With dead ends: 3494 [2021-11-03 04:21:36,890 INFO L226 Difference]: Without dead ends: 3494 [2021-11-03 04:21:36,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-11-03 04:21:36,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2021-11-03 04:21:36,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 2192. [2021-11-03 04:21:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2192 states, 2182 states have (on average 2.2685609532538957) internal successors, (4950), 2191 states have internal predecessors, (4950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:36,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2192 states to 2192 states and 4950 transitions. [2021-11-03 04:21:36,928 INFO L78 Accepts]: Start accepts. Automaton has 2192 states and 4950 transitions. Word has length 18 [2021-11-03 04:21:36,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:36,928 INFO L470 AbstractCegarLoop]: Abstraction has 2192 states and 4950 transitions. [2021-11-03 04:21:36,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:36,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2192 states and 4950 transitions. [2021-11-03 04:21:36,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:21:36,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:36,929 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:36,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-03 04:21:36,930 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:21:36,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:36,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1066582182, now seen corresponding path program 1 times [2021-11-03 04:21:36,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:36,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696305064] [2021-11-03 04:21:36,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:36,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:37,770 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:37,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696305064] [2021-11-03 04:21:37,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696305064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:37,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:37,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 04:21:37,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714608352] [2021-11-03 04:21:37,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 04:21:37,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:37,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 04:21:37,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:21:37,774 INFO L87 Difference]: Start difference. First operand 2192 states and 4950 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:42,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:42,472 INFO L93 Difference]: Finished difference Result 4197 states and 9422 transitions. [2021-11-03 04:21:42,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-03 04:21:42,472 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:21:42,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:42,479 INFO L225 Difference]: With dead ends: 4197 [2021-11-03 04:21:42,479 INFO L226 Difference]: Without dead ends: 4197 [2021-11-03 04:21:42,479 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=443, Invalid=1449, Unknown=0, NotChecked=0, Total=1892 [2021-11-03 04:21:42,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4197 states. [2021-11-03 04:21:42,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4197 to 2239. [2021-11-03 04:21:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2239 states, 2229 states have (on average 2.2781516375056077) internal successors, (5078), 2238 states have internal predecessors, (5078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:42,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 5078 transitions. [2021-11-03 04:21:42,520 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 5078 transitions. Word has length 20 [2021-11-03 04:21:42,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:42,520 INFO L470 AbstractCegarLoop]: Abstraction has 2239 states and 5078 transitions. [2021-11-03 04:21:42,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:42,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 5078 transitions. [2021-11-03 04:21:42,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:21:42,521 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:42,521 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:42,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-03 04:21:42,522 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:21:42,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:42,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1055886252, now seen corresponding path program 2 times [2021-11-03 04:21:42,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:42,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196066497] [2021-11-03 04:21:42,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:42,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:42,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:42,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:42,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196066497] [2021-11-03 04:21:42,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196066497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:42,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:42,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:21:42,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578764722] [2021-11-03 04:21:42,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:21:42,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:42,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:21:42,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:21:42,813 INFO L87 Difference]: Start difference. First operand 2239 states and 5078 transitions. Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:45,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:45,033 INFO L93 Difference]: Finished difference Result 3661 states and 8306 transitions. [2021-11-03 04:21:45,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 04:21:45,034 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:21:45,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:45,039 INFO L225 Difference]: With dead ends: 3661 [2021-11-03 04:21:45,040 INFO L226 Difference]: Without dead ends: 3661 [2021-11-03 04:21:45,040 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2021-11-03 04:21:45,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2021-11-03 04:21:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 2415. [2021-11-03 04:21:45,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2405 states have (on average 2.29022869022869) internal successors, (5508), 2414 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:45,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 5508 transitions. [2021-11-03 04:21:45,083 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 5508 transitions. Word has length 20 [2021-11-03 04:21:45,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:45,083 INFO L470 AbstractCegarLoop]: Abstraction has 2415 states and 5508 transitions. [2021-11-03 04:21:45,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:45,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 5508 transitions. [2021-11-03 04:21:45,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:21:45,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:45,085 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:45,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-03 04:21:45,086 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:21:45,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2054182207, now seen corresponding path program 1 times [2021-11-03 04:21:45,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:45,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148096328] [2021-11-03 04:21:45,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:45,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:45,920 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:45,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148096328] [2021-11-03 04:21:45,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148096328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:45,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:45,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 04:21:45,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727930325] [2021-11-03 04:21:45,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 04:21:45,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:45,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 04:21:45,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:21:45,922 INFO L87 Difference]: Start difference. First operand 2415 states and 5508 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:50,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:50,021 INFO L93 Difference]: Finished difference Result 4235 states and 9584 transitions. [2021-11-03 04:21:50,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-03 04:21:50,022 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:21:50,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:50,027 INFO L225 Difference]: With dead ends: 4235 [2021-11-03 04:21:50,028 INFO L226 Difference]: Without dead ends: 4235 [2021-11-03 04:21:50,028 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=459, Invalid=1893, Unknown=0, NotChecked=0, Total=2352 [2021-11-03 04:21:50,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4235 states. [2021-11-03 04:21:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4235 to 2533. [2021-11-03 04:21:50,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2533 states, 2523 states have (on average 2.300435988902101) internal successors, (5804), 2532 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:50,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 5804 transitions. [2021-11-03 04:21:50,072 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 5804 transitions. Word has length 20 [2021-11-03 04:21:50,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:50,072 INFO L470 AbstractCegarLoop]: Abstraction has 2533 states and 5804 transitions. [2021-11-03 04:21:50,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:50,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 5804 transitions. [2021-11-03 04:21:50,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:21:50,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:50,074 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:50,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-03 04:21:50,075 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:21:50,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:50,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1840153223, now seen corresponding path program 2 times [2021-11-03 04:21:50,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:50,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887460084] [2021-11-03 04:21:50,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:50,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:50,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:50,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:50,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887460084] [2021-11-03 04:21:50,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887460084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:50,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:50,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:21:50,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020382575] [2021-11-03 04:21:50,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:21:50,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:21:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:21:50,876 INFO L87 Difference]: Start difference. First operand 2533 states and 5804 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:57,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:57,515 INFO L93 Difference]: Finished difference Result 4764 states and 10860 transitions. [2021-11-03 04:21:57,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-03 04:21:57,515 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:21:57,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:57,522 INFO L225 Difference]: With dead ends: 4764 [2021-11-03 04:21:57,522 INFO L226 Difference]: Without dead ends: 4764 [2021-11-03 04:21:57,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=530, Invalid=2332, Unknown=0, NotChecked=0, Total=2862 [2021-11-03 04:21:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4764 states. [2021-11-03 04:21:57,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4764 to 2535. [2021-11-03 04:21:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2535 states, 2525 states have (on average 2.3005940594059404) internal successors, (5809), 2534 states have internal predecessors, (5809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:57,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 5809 transitions. [2021-11-03 04:21:57,570 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 5809 transitions. Word has length 20 [2021-11-03 04:21:57,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:57,570 INFO L470 AbstractCegarLoop]: Abstraction has 2535 states and 5809 transitions. [2021-11-03 04:21:57,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:57,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 5809 transitions. [2021-11-03 04:21:57,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:21:57,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:57,572 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:57,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-03 04:21:57,572 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:21:57,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:57,573 INFO L85 PathProgramCache]: Analyzing trace with hash 666066890, now seen corresponding path program 3 times [2021-11-03 04:21:57,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:21:57,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757183475] [2021-11-03 04:21:57,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:57,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:21:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:58,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:21:58,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757183475] [2021-11-03 04:21:58,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757183475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:58,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:58,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 04:21:58,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929559030] [2021-11-03 04:21:58,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 04:21:58,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:21:58,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 04:21:58,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:21:58,296 INFO L87 Difference]: Start difference. First operand 2535 states and 5809 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:07,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:07,027 INFO L93 Difference]: Finished difference Result 5951 states and 13375 transitions. [2021-11-03 04:22:07,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-11-03 04:22:07,027 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:22:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:07,035 INFO L225 Difference]: With dead ends: 5951 [2021-11-03 04:22:07,035 INFO L226 Difference]: Without dead ends: 5951 [2021-11-03 04:22:07,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1347, Invalid=4659, Unknown=0, NotChecked=0, Total=6006 [2021-11-03 04:22:07,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5951 states. [2021-11-03 04:22:07,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5951 to 2560. [2021-11-03 04:22:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2560 states, 2550 states have (on average 2.304313725490196) internal successors, (5876), 2559 states have internal predecessors, (5876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 5876 transitions. [2021-11-03 04:22:07,088 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 5876 transitions. Word has length 20 [2021-11-03 04:22:07,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:07,088 INFO L470 AbstractCegarLoop]: Abstraction has 2560 states and 5876 transitions. [2021-11-03 04:22:07,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 5876 transitions. [2021-11-03 04:22:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:22:07,089 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:07,089 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:07,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-03 04:22:07,090 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:22:07,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:07,090 INFO L85 PathProgramCache]: Analyzing trace with hash 676762820, now seen corresponding path program 4 times [2021-11-03 04:22:07,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:22:07,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229176334] [2021-11-03 04:22:07,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:07,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:22:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:07,430 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:22:07,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229176334] [2021-11-03 04:22:07,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229176334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:07,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:07,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 04:22:07,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786217136] [2021-11-03 04:22:07,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:22:07,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:22:07,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:22:07,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:22:07,431 INFO L87 Difference]: Start difference. First operand 2560 states and 5876 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:13,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:13,352 INFO L93 Difference]: Finished difference Result 7202 states and 16506 transitions. [2021-11-03 04:22:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-03 04:22:13,352 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:22:13,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:13,364 INFO L225 Difference]: With dead ends: 7202 [2021-11-03 04:22:13,364 INFO L226 Difference]: Without dead ends: 7202 [2021-11-03 04:22:13,364 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1750 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1489, Invalid=4673, Unknown=0, NotChecked=0, Total=6162 [2021-11-03 04:22:13,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7202 states. [2021-11-03 04:22:13,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7202 to 2536. [2021-11-03 04:22:13,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 2526 states have (on average 2.3004750593824226) internal successors, (5811), 2535 states have internal predecessors, (5811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:13,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 5811 transitions. [2021-11-03 04:22:13,447 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 5811 transitions. Word has length 20 [2021-11-03 04:22:13,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:13,448 INFO L470 AbstractCegarLoop]: Abstraction has 2536 states and 5811 transitions. [2021-11-03 04:22:13,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:13,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 5811 transitions. [2021-11-03 04:22:13,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:22:13,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:13,449 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:13,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-03 04:22:13,450 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:22:13,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:13,450 INFO L85 PathProgramCache]: Analyzing trace with hash 457773582, now seen corresponding path program 5 times [2021-11-03 04:22:13,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:22:13,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991168070] [2021-11-03 04:22:13,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:13,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:22:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:13,864 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:22:13,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991168070] [2021-11-03 04:22:13,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991168070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:13,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:13,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 04:22:13,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131683266] [2021-11-03 04:22:13,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:22:13,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:22:13,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:22:13,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:22:13,866 INFO L87 Difference]: Start difference. First operand 2536 states and 5811 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:19,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:19,844 INFO L93 Difference]: Finished difference Result 6349 states and 14409 transitions. [2021-11-03 04:22:19,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-03 04:22:19,844 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:22:19,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:19,853 INFO L225 Difference]: With dead ends: 6349 [2021-11-03 04:22:19,854 INFO L226 Difference]: Without dead ends: 6349 [2021-11-03 04:22:19,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1419, Invalid=4131, Unknown=0, NotChecked=0, Total=5550 [2021-11-03 04:22:19,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6349 states. [2021-11-03 04:22:19,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6349 to 2538. [2021-11-03 04:22:19,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2538 states, 2528 states have (on average 2.300237341772152) internal successors, (5815), 2537 states have internal predecessors, (5815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:19,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 5815 transitions. [2021-11-03 04:22:19,905 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 5815 transitions. Word has length 20 [2021-11-03 04:22:19,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:19,906 INFO L470 AbstractCegarLoop]: Abstraction has 2538 states and 5815 transitions. [2021-11-03 04:22:19,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:19,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 5815 transitions. [2021-11-03 04:22:19,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:22:19,907 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:19,907 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:19,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-03 04:22:19,908 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:22:19,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:19,908 INFO L85 PathProgramCache]: Analyzing trace with hash -40748880, now seen corresponding path program 6 times [2021-11-03 04:22:19,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:22:19,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415787668] [2021-11-03 04:22:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:19,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:22:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:20,238 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:22:20,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415787668] [2021-11-03 04:22:20,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415787668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:20,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:20,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 04:22:20,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204504191] [2021-11-03 04:22:20,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:22:20,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:22:20,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:22:20,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:22:20,240 INFO L87 Difference]: Start difference. First operand 2538 states and 5815 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:26,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:26,063 INFO L93 Difference]: Finished difference Result 6232 states and 14163 transitions. [2021-11-03 04:22:26,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-03 04:22:26,064 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:22:26,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:26,072 INFO L225 Difference]: With dead ends: 6232 [2021-11-03 04:22:26,072 INFO L226 Difference]: Without dead ends: 6232 [2021-11-03 04:22:26,073 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1657 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1474, Invalid=4532, Unknown=0, NotChecked=0, Total=6006 [2021-11-03 04:22:26,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6232 states. [2021-11-03 04:22:26,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6232 to 2539. [2021-11-03 04:22:26,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2539 states, 2529 states have (on average 2.30011862396204) internal successors, (5817), 2538 states have internal predecessors, (5817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2539 states to 2539 states and 5817 transitions. [2021-11-03 04:22:26,140 INFO L78 Accepts]: Start accepts. Automaton has 2539 states and 5817 transitions. Word has length 20 [2021-11-03 04:22:26,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:26,141 INFO L470 AbstractCegarLoop]: Abstraction has 2539 states and 5817 transitions. [2021-11-03 04:22:26,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:26,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2539 states and 5817 transitions. [2021-11-03 04:22:26,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:22:26,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:26,142 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:26,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-03 04:22:26,142 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:22:26,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:26,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1235209460, now seen corresponding path program 7 times [2021-11-03 04:22:26,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:22:26,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762125979] [2021-11-03 04:22:26,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:26,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:22:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:26,545 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:22:26,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762125979] [2021-11-03 04:22:26,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762125979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:26,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:26,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 04:22:26,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975609435] [2021-11-03 04:22:26,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:22:26,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:22:26,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:22:26,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:22:26,547 INFO L87 Difference]: Start difference. First operand 2539 states and 5817 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:33,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:33,672 INFO L93 Difference]: Finished difference Result 6247 states and 14202 transitions. [2021-11-03 04:22:33,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-03 04:22:33,673 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:22:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:33,682 INFO L225 Difference]: With dead ends: 6247 [2021-11-03 04:22:33,682 INFO L226 Difference]: Without dead ends: 6247 [2021-11-03 04:22:33,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1623, Invalid=5349, Unknown=0, NotChecked=0, Total=6972 [2021-11-03 04:22:33,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6247 states. [2021-11-03 04:22:33,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6247 to 2541. [2021-11-03 04:22:33,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2531 states have (on average 2.2998814697747925) internal successors, (5821), 2540 states have internal predecessors, (5821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 5821 transitions. [2021-11-03 04:22:33,769 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 5821 transitions. Word has length 20 [2021-11-03 04:22:33,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:33,769 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 5821 transitions. [2021-11-03 04:22:33,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:33,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 5821 transitions. [2021-11-03 04:22:33,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:22:33,771 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:33,771 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:33,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-03 04:22:33,771 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:22:33,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:33,771 INFO L85 PathProgramCache]: Analyzing trace with hash 698723644, now seen corresponding path program 8 times [2021-11-03 04:22:33,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:22:33,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253657678] [2021-11-03 04:22:33,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:33,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:22:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:34,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:34,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:22:34,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253657678] [2021-11-03 04:22:34,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253657678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:34,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:34,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 04:22:34,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110243469] [2021-11-03 04:22:34,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:22:34,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:22:34,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:22:34,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:22:34,161 INFO L87 Difference]: Start difference. First operand 2541 states and 5821 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:40,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:40,395 INFO L93 Difference]: Finished difference Result 6114 states and 13902 transitions. [2021-11-03 04:22:40,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-03 04:22:40,395 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:22:40,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:40,404 INFO L225 Difference]: With dead ends: 6114 [2021-11-03 04:22:40,404 INFO L226 Difference]: Without dead ends: 6114 [2021-11-03 04:22:40,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2205 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1730, Invalid=5752, Unknown=0, NotChecked=0, Total=7482 [2021-11-03 04:22:40,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6114 states. [2021-11-03 04:22:40,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6114 to 2530. [2021-11-03 04:22:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2520 states have (on average 2.300396825396825) internal successors, (5797), 2529 states have internal predecessors, (5797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:40,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 5797 transitions. [2021-11-03 04:22:40,460 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 5797 transitions. Word has length 20 [2021-11-03 04:22:40,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:40,460 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 5797 transitions. [2021-11-03 04:22:40,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:40,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 5797 transitions. [2021-11-03 04:22:40,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:22:40,462 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:40,462 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:40,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-03 04:22:40,462 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:22:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:40,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1797473693, now seen corresponding path program 3 times [2021-11-03 04:22:40,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:22:40,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245770465] [2021-11-03 04:22:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:40,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:22:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:41,174 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:22:41,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245770465] [2021-11-03 04:22:41,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245770465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:41,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:41,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:22:41,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402624591] [2021-11-03 04:22:41,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:22:41,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:22:41,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:22:41,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:22:41,175 INFO L87 Difference]: Start difference. First operand 2530 states and 5797 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:47,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:47,496 INFO L93 Difference]: Finished difference Result 4914 states and 11162 transitions. [2021-11-03 04:22:47,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-03 04:22:47,496 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:22:47,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:47,503 INFO L225 Difference]: With dead ends: 4914 [2021-11-03 04:22:47,503 INFO L226 Difference]: Without dead ends: 4914 [2021-11-03 04:22:47,503 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=586, Invalid=2494, Unknown=0, NotChecked=0, Total=3080 [2021-11-03 04:22:47,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4914 states. [2021-11-03 04:22:47,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4914 to 2531. [2021-11-03 04:22:47,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 2521 states have (on average 2.3002776675922254) internal successors, (5799), 2530 states have internal predecessors, (5799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 5799 transitions. [2021-11-03 04:22:47,551 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 5799 transitions. Word has length 20 [2021-11-03 04:22:47,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:47,551 INFO L470 AbstractCegarLoop]: Abstraction has 2531 states and 5799 transitions. [2021-11-03 04:22:47,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:47,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 5799 transitions. [2021-11-03 04:22:47,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:22:47,553 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:47,553 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:47,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-03 04:22:47,553 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:22:47,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:47,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1170853827, now seen corresponding path program 4 times [2021-11-03 04:22:47,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:22:47,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484656661] [2021-11-03 04:22:47,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:47,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:22:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:48,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:22:48,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484656661] [2021-11-03 04:22:48,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484656661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:48,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:48,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:22:48,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973207509] [2021-11-03 04:22:48,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:22:48,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:22:48,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:22:48,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:22:48,292 INFO L87 Difference]: Start difference. First operand 2531 states and 5799 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:54,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:54,672 INFO L93 Difference]: Finished difference Result 4756 states and 10808 transitions. [2021-11-03 04:22:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-03 04:22:54,673 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:22:54,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:54,679 INFO L225 Difference]: With dead ends: 4756 [2021-11-03 04:22:54,679 INFO L226 Difference]: Without dead ends: 4756 [2021-11-03 04:22:54,679 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=675, Invalid=2631, Unknown=0, NotChecked=0, Total=3306 [2021-11-03 04:22:54,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2021-11-03 04:22:54,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 2532. [2021-11-03 04:22:54,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 2522 states have (on average 2.3001586042823154) internal successors, (5801), 2531 states have internal predecessors, (5801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 5801 transitions. [2021-11-03 04:22:54,726 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 5801 transitions. Word has length 20 [2021-11-03 04:22:54,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:54,726 INFO L470 AbstractCegarLoop]: Abstraction has 2532 states and 5801 transitions. [2021-11-03 04:22:54,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:54,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 5801 transitions. [2021-11-03 04:22:54,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:22:54,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:54,728 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:54,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-03 04:22:54,728 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:22:54,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:54,729 INFO L85 PathProgramCache]: Analyzing trace with hash 438262323, now seen corresponding path program 5 times [2021-11-03 04:22:54,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:22:54,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265583350] [2021-11-03 04:22:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:54,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:22:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:22:55,590 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:22:55,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265583350] [2021-11-03 04:22:55,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265583350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:55,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:55,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:22:55,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303423629] [2021-11-03 04:22:55,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:22:55,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:22:55,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:22:55,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:22:55,591 INFO L87 Difference]: Start difference. First operand 2532 states and 5801 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:02,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:02,089 INFO L93 Difference]: Finished difference Result 4721 states and 10736 transitions. [2021-11-03 04:23:02,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-03 04:23:02,090 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:23:02,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:02,097 INFO L225 Difference]: With dead ends: 4721 [2021-11-03 04:23:02,097 INFO L226 Difference]: Without dead ends: 4721 [2021-11-03 04:23:02,098 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=595, Invalid=2597, Unknown=0, NotChecked=0, Total=3192 [2021-11-03 04:23:02,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4721 states. [2021-11-03 04:23:02,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4721 to 2550. [2021-11-03 04:23:02,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 2540 states have (on average 2.3003937007874016) internal successors, (5843), 2549 states have internal predecessors, (5843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 5843 transitions. [2021-11-03 04:23:02,150 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 5843 transitions. Word has length 20 [2021-11-03 04:23:02,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:02,150 INFO L470 AbstractCegarLoop]: Abstraction has 2550 states and 5843 transitions. [2021-11-03 04:23:02,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:02,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 5843 transitions. [2021-11-03 04:23:02,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:23:02,152 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:02,152 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:02,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-03 04:23:02,153 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:23:02,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:02,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1548055043, now seen corresponding path program 6 times [2021-11-03 04:23:02,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:02,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268663361] [2021-11-03 04:23:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:02,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:03,033 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:03,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268663361] [2021-11-03 04:23:03,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268663361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:03,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:03,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:23:03,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333149931] [2021-11-03 04:23:03,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:23:03,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:03,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:23:03,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:23:03,034 INFO L87 Difference]: Start difference. First operand 2550 states and 5843 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:08,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:08,681 INFO L93 Difference]: Finished difference Result 4726 states and 10740 transitions. [2021-11-03 04:23:08,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-03 04:23:08,682 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:23:08,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:08,689 INFO L225 Difference]: With dead ends: 4726 [2021-11-03 04:23:08,689 INFO L226 Difference]: Without dead ends: 4726 [2021-11-03 04:23:08,690 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=560, Invalid=2632, Unknown=0, NotChecked=0, Total=3192 [2021-11-03 04:23:08,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2021-11-03 04:23:08,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 2543. [2021-11-03 04:23:08,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 2533 states have (on average 2.300434267666798) internal successors, (5827), 2542 states have internal predecessors, (5827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:08,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 5827 transitions. [2021-11-03 04:23:08,762 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 5827 transitions. Word has length 20 [2021-11-03 04:23:08,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:08,762 INFO L470 AbstractCegarLoop]: Abstraction has 2543 states and 5827 transitions. [2021-11-03 04:23:08,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:08,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 5827 transitions. [2021-11-03 04:23:08,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:23:08,764 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:08,764 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:08,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-03 04:23:08,764 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:23:08,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:08,765 INFO L85 PathProgramCache]: Analyzing trace with hash -444729626, now seen corresponding path program 9 times [2021-11-03 04:23:08,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:08,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020815504] [2021-11-03 04:23:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:08,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:09,119 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:09,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020815504] [2021-11-03 04:23:09,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020815504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:09,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:09,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:23:09,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623897463] [2021-11-03 04:23:09,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:23:09,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:09,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:23:09,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:23:09,120 INFO L87 Difference]: Start difference. First operand 2543 states and 5827 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:12,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:12,447 INFO L93 Difference]: Finished difference Result 3768 states and 8555 transitions. [2021-11-03 04:23:12,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-03 04:23:12,448 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:23:12,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:12,452 INFO L225 Difference]: With dead ends: 3768 [2021-11-03 04:23:12,453 INFO L226 Difference]: Without dead ends: 3768 [2021-11-03 04:23:12,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=476, Invalid=1330, Unknown=0, NotChecked=0, Total=1806 [2021-11-03 04:23:12,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2021-11-03 04:23:12,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 2573. [2021-11-03 04:23:12,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2573 states, 2563 states have (on average 2.298478345688646) internal successors, (5891), 2572 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:12,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 5891 transitions. [2021-11-03 04:23:12,490 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 5891 transitions. Word has length 20 [2021-11-03 04:23:12,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:12,490 INFO L470 AbstractCegarLoop]: Abstraction has 2573 states and 5891 transitions. [2021-11-03 04:23:12,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:12,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 5891 transitions. [2021-11-03 04:23:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:23:12,492 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:12,492 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:12,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-03 04:23:12,492 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:23:12,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:12,492 INFO L85 PathProgramCache]: Analyzing trace with hash -943252088, now seen corresponding path program 10 times [2021-11-03 04:23:12,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:12,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981446776] [2021-11-03 04:23:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:12,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:12,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:12,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981446776] [2021-11-03 04:23:12,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981446776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:12,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:12,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:23:12,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302692991] [2021-11-03 04:23:12,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:23:12,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:12,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:23:12,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:23:12,785 INFO L87 Difference]: Start difference. First operand 2573 states and 5891 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:17,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:17,016 INFO L93 Difference]: Finished difference Result 4015 states and 9154 transitions. [2021-11-03 04:23:17,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 04:23:17,016 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:23:17,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:17,021 INFO L225 Difference]: With dead ends: 4015 [2021-11-03 04:23:17,021 INFO L226 Difference]: Without dead ends: 4015 [2021-11-03 04:23:17,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=493, Invalid=1399, Unknown=0, NotChecked=0, Total=1892 [2021-11-03 04:23:17,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4015 states. [2021-11-03 04:23:17,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4015 to 2574. [2021-11-03 04:23:17,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2574 states, 2564 states have (on average 2.298361934477379) internal successors, (5893), 2573 states have internal predecessors, (5893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:17,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 5893 transitions. [2021-11-03 04:23:17,063 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 5893 transitions. Word has length 20 [2021-11-03 04:23:17,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:17,064 INFO L470 AbstractCegarLoop]: Abstraction has 2574 states and 5893 transitions. [2021-11-03 04:23:17,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:17,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 5893 transitions. [2021-11-03 04:23:17,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:23:17,066 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:17,066 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:17,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-03 04:23:17,067 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:23:17,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:17,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2137712668, now seen corresponding path program 11 times [2021-11-03 04:23:17,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:17,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113947772] [2021-11-03 04:23:17,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:17,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:17,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:17,405 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:17,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113947772] [2021-11-03 04:23:17,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113947772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:17,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:17,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:23:17,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806408467] [2021-11-03 04:23:17,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:23:17,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:17,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:23:17,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:23:17,406 INFO L87 Difference]: Start difference. First operand 2574 states and 5893 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:21,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:21,306 INFO L93 Difference]: Finished difference Result 4056 states and 9242 transitions. [2021-11-03 04:23:21,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-03 04:23:21,307 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:23:21,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:21,313 INFO L225 Difference]: With dead ends: 4056 [2021-11-03 04:23:21,313 INFO L226 Difference]: Without dead ends: 4056 [2021-11-03 04:23:21,313 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-11-03 04:23:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4056 states. [2021-11-03 04:23:21,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4056 to 2576. [2021-11-03 04:23:21,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2576 states, 2566 states have (on average 2.2981293842556507) internal successors, (5897), 2575 states have internal predecessors, (5897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 5897 transitions. [2021-11-03 04:23:21,359 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 5897 transitions. Word has length 20 [2021-11-03 04:23:21,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:21,359 INFO L470 AbstractCegarLoop]: Abstraction has 2576 states and 5897 transitions. [2021-11-03 04:23:21,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:21,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 5897 transitions. [2021-11-03 04:23:21,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:23:21,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:21,361 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:21,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-03 04:23:21,361 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:23:21,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:21,361 INFO L85 PathProgramCache]: Analyzing trace with hash -203779564, now seen corresponding path program 12 times [2021-11-03 04:23:21,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:21,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530720786] [2021-11-03 04:23:21,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:21,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:21,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:21,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:21,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530720786] [2021-11-03 04:23:21,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530720786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:21,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:21,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:23:21,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706874063] [2021-11-03 04:23:21,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:23:21,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:21,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:23:21,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:23:21,750 INFO L87 Difference]: Start difference. First operand 2576 states and 5897 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:25,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:25,402 INFO L93 Difference]: Finished difference Result 4010 states and 9139 transitions. [2021-11-03 04:23:25,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-03 04:23:25,402 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:23:25,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:25,408 INFO L225 Difference]: With dead ends: 4010 [2021-11-03 04:23:25,408 INFO L226 Difference]: Without dead ends: 4010 [2021-11-03 04:23:25,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=526, Invalid=1544, Unknown=0, NotChecked=0, Total=2070 [2021-11-03 04:23:25,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2021-11-03 04:23:25,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 2571. [2021-11-03 04:23:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 2561 states have (on average 2.2987114408434204) internal successors, (5887), 2570 states have internal predecessors, (5887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 5887 transitions. [2021-11-03 04:23:25,453 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 5887 transitions. Word has length 20 [2021-11-03 04:23:25,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:25,453 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 5887 transitions. [2021-11-03 04:23:25,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 5887 transitions. [2021-11-03 04:23:25,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:23:25,455 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:25,455 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:25,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-03 04:23:25,455 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:23:25,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:25,455 INFO L85 PathProgramCache]: Analyzing trace with hash -625102950, now seen corresponding path program 13 times [2021-11-03 04:23:25,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:25,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371096296] [2021-11-03 04:23:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:25,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:25,769 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:25,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371096296] [2021-11-03 04:23:25,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371096296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:25,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:25,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:23:25,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375675906] [2021-11-03 04:23:25,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:23:25,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:25,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:23:25,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:23:25,770 INFO L87 Difference]: Start difference. First operand 2571 states and 5887 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:30,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:30,630 INFO L93 Difference]: Finished difference Result 3936 states and 8925 transitions. [2021-11-03 04:23:30,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-03 04:23:30,631 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:23:30,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:30,636 INFO L225 Difference]: With dead ends: 3936 [2021-11-03 04:23:30,636 INFO L226 Difference]: Without dead ends: 3936 [2021-11-03 04:23:30,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=849, Invalid=2573, Unknown=0, NotChecked=0, Total=3422 [2021-11-03 04:23:30,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-11-03 04:23:30,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 2573. [2021-11-03 04:23:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2573 states, 2563 states have (on average 2.298478345688646) internal successors, (5891), 2572 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 5891 transitions. [2021-11-03 04:23:30,682 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 5891 transitions. Word has length 20 [2021-11-03 04:23:30,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:30,682 INFO L470 AbstractCegarLoop]: Abstraction has 2573 states and 5891 transitions. [2021-11-03 04:23:30,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:30,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 5891 transitions. [2021-11-03 04:23:30,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:23:30,684 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:30,684 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:30,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-03 04:23:30,684 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:23:30,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:30,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1308830154, now seen corresponding path program 14 times [2021-11-03 04:23:30,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:30,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343592470] [2021-11-03 04:23:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:30,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:31,052 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:31,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343592470] [2021-11-03 04:23:31,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343592470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:31,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:31,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:23:31,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361977208] [2021-11-03 04:23:31,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:23:31,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:31,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:23:31,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:23:31,053 INFO L87 Difference]: Start difference. First operand 2573 states and 5891 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:35,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:35,992 INFO L93 Difference]: Finished difference Result 4165 states and 9482 transitions. [2021-11-03 04:23:35,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-03 04:23:35,992 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:23:35,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:35,997 INFO L225 Difference]: With dead ends: 4165 [2021-11-03 04:23:35,997 INFO L226 Difference]: Without dead ends: 4165 [2021-11-03 04:23:35,998 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=878, Invalid=2662, Unknown=0, NotChecked=0, Total=3540 [2021-11-03 04:23:36,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2021-11-03 04:23:36,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 2571. [2021-11-03 04:23:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 2561 states have (on average 2.2987114408434204) internal successors, (5887), 2570 states have internal predecessors, (5887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 5887 transitions. [2021-11-03 04:23:36,035 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 5887 transitions. Word has length 20 [2021-11-03 04:23:36,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:36,036 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 5887 transitions. [2021-11-03 04:23:36,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 5887 transitions. [2021-11-03 04:23:36,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:23:36,037 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:36,037 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:36,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-03 04:23:36,037 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:23:36,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:36,037 INFO L85 PathProgramCache]: Analyzing trace with hash -842841626, now seen corresponding path program 15 times [2021-11-03 04:23:36,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:36,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515961059] [2021-11-03 04:23:36,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:36,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:36,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:36,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515961059] [2021-11-03 04:23:36,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515961059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:36,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:36,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 04:23:36,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519685764] [2021-11-03 04:23:36,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:23:36,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:36,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:23:36,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:36,178 INFO L87 Difference]: Start difference. First operand 2571 states and 5887 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:37,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:37,417 INFO L93 Difference]: Finished difference Result 2507 states and 5559 transitions. [2021-11-03 04:23:37,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:23:37,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:23:37,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:37,421 INFO L225 Difference]: With dead ends: 2507 [2021-11-03 04:23:37,421 INFO L226 Difference]: Without dead ends: 2506 [2021-11-03 04:23:37,421 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:23:37,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2021-11-03 04:23:37,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2400. [2021-11-03 04:23:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 2382 states have (on average 2.2581863979848866) internal successors, (5379), 2399 states have internal predecessors, (5379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:37,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 5379 transitions. [2021-11-03 04:23:37,452 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 5379 transitions. Word has length 20 [2021-11-03 04:23:37,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:37,453 INFO L470 AbstractCegarLoop]: Abstraction has 2400 states and 5379 transitions. [2021-11-03 04:23:37,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:37,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 5379 transitions. [2021-11-03 04:23:37,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:23:37,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:37,454 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:37,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-03 04:23:37,454 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:23:37,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:37,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1079001227, now seen corresponding path program 7 times [2021-11-03 04:23:37,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:37,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344727422] [2021-11-03 04:23:37,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:37,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:38,219 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:38,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344727422] [2021-11-03 04:23:38,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344727422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:38,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:38,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:23:38,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838424890] [2021-11-03 04:23:38,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:23:38,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:38,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:23:38,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:23:38,220 INFO L87 Difference]: Start difference. First operand 2400 states and 5379 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:43,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:43,962 INFO L93 Difference]: Finished difference Result 3919 states and 8705 transitions. [2021-11-03 04:23:43,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-03 04:23:43,963 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:23:43,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:43,969 INFO L225 Difference]: With dead ends: 3919 [2021-11-03 04:23:43,969 INFO L226 Difference]: Without dead ends: 3919 [2021-11-03 04:23:43,969 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=612, Invalid=2694, Unknown=0, NotChecked=0, Total=3306 [2021-11-03 04:23:43,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2021-11-03 04:23:44,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 2452. [2021-11-03 04:23:44,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2434 states have (on average 2.2596548890714874) internal successors, (5500), 2451 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:44,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 5500 transitions. [2021-11-03 04:23:44,039 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 5500 transitions. Word has length 20 [2021-11-03 04:23:44,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:44,039 INFO L470 AbstractCegarLoop]: Abstraction has 2452 states and 5500 transitions. [2021-11-03 04:23:44,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 5500 transitions. [2021-11-03 04:23:44,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:23:44,040 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:44,040 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:44,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-03 04:23:44,041 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:23:44,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:44,041 INFO L85 PathProgramCache]: Analyzing trace with hash 452381361, now seen corresponding path program 8 times [2021-11-03 04:23:44,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:44,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153198851] [2021-11-03 04:23:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:44,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:44,737 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:44,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153198851] [2021-11-03 04:23:44,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153198851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:44,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:44,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:23:44,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516557751] [2021-11-03 04:23:44,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:23:44,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:44,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:23:44,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:23:44,738 INFO L87 Difference]: Start difference. First operand 2452 states and 5500 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:51,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:51,381 INFO L93 Difference]: Finished difference Result 4303 states and 9604 transitions. [2021-11-03 04:23:51,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-03 04:23:51,382 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:23:51,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:51,387 INFO L225 Difference]: With dead ends: 4303 [2021-11-03 04:23:51,387 INFO L226 Difference]: Without dead ends: 4303 [2021-11-03 04:23:51,388 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=747, Invalid=3035, Unknown=0, NotChecked=0, Total=3782 [2021-11-03 04:23:51,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4303 states. [2021-11-03 04:23:51,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4303 to 2453. [2021-11-03 04:23:51,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 2435 states have (on average 2.2595482546201233) internal successors, (5502), 2452 states have internal predecessors, (5502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:51,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 5502 transitions. [2021-11-03 04:23:51,425 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 5502 transitions. Word has length 20 [2021-11-03 04:23:51,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:51,425 INFO L470 AbstractCegarLoop]: Abstraction has 2453 states and 5502 transitions. [2021-11-03 04:23:51,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:51,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 5502 transitions. [2021-11-03 04:23:51,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:23:51,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:51,426 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:51,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-03 04:23:51,426 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:23:51,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:51,427 INFO L85 PathProgramCache]: Analyzing trace with hash -280210143, now seen corresponding path program 9 times [2021-11-03 04:23:51,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:51,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134279424] [2021-11-03 04:23:51,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:51,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:52,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:52,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134279424] [2021-11-03 04:23:52,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134279424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:52,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:52,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:23:52,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266164320] [2021-11-03 04:23:52,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:23:52,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:52,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:23:52,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:23:52,213 INFO L87 Difference]: Start difference. First operand 2453 states and 5502 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:59,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:59,049 INFO L93 Difference]: Finished difference Result 4268 states and 9532 transitions. [2021-11-03 04:23:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-03 04:23:59,049 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:23:59,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:59,054 INFO L225 Difference]: With dead ends: 4268 [2021-11-03 04:23:59,055 INFO L226 Difference]: Without dead ends: 4268 [2021-11-03 04:23:59,055 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=663, Invalid=2997, Unknown=0, NotChecked=0, Total=3660 [2021-11-03 04:23:59,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2021-11-03 04:23:59,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 2471. [2021-11-03 04:23:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 2453 states have (on average 2.2600896860986546) internal successors, (5544), 2470 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:59,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 5544 transitions. [2021-11-03 04:23:59,095 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 5544 transitions. Word has length 20 [2021-11-03 04:23:59,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:59,095 INFO L470 AbstractCegarLoop]: Abstraction has 2471 states and 5544 transitions. [2021-11-03 04:23:59,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:59,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 5544 transitions. [2021-11-03 04:23:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:23:59,096 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:59,096 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:59,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-03 04:23:59,096 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:23:59,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:59,097 INFO L85 PathProgramCache]: Analyzing trace with hash 829582577, now seen corresponding path program 10 times [2021-11-03 04:23:59,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:59,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954338752] [2021-11-03 04:23:59,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:59,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:59,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:59,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954338752] [2021-11-03 04:23:59,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954338752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:59,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:59,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:23:59,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383345412] [2021-11-03 04:23:59,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:23:59,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:59,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:23:59,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:23:59,953 INFO L87 Difference]: Start difference. First operand 2471 states and 5544 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:06,533 INFO L93 Difference]: Finished difference Result 4334 states and 9693 transitions. [2021-11-03 04:24:06,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-03 04:24:06,534 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:24:06,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:06,540 INFO L225 Difference]: With dead ends: 4334 [2021-11-03 04:24:06,540 INFO L226 Difference]: Without dead ends: 4334 [2021-11-03 04:24:06,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=627, Invalid=3033, Unknown=0, NotChecked=0, Total=3660 [2021-11-03 04:24:06,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4334 states. [2021-11-03 04:24:06,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 2400. [2021-11-03 04:24:06,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 2382 states have (on average 2.2581863979848866) internal successors, (5379), 2399 states have internal predecessors, (5379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:06,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 5379 transitions. [2021-11-03 04:24:06,577 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 5379 transitions. Word has length 20 [2021-11-03 04:24:06,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:06,577 INFO L470 AbstractCegarLoop]: Abstraction has 2400 states and 5379 transitions. [2021-11-03 04:24:06,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:06,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 5379 transitions. [2021-11-03 04:24:06,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:24:06,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:06,579 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:06,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-03 04:24:06,579 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:24:06,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:06,579 INFO L85 PathProgramCache]: Analyzing trace with hash 107307711, now seen corresponding path program 11 times [2021-11-03 04:24:06,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:24:06,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808325378] [2021-11-03 04:24:06,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:06,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:24:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:07,246 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:24:07,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808325378] [2021-11-03 04:24:07,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808325378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:07,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:07,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:24:07,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498669733] [2021-11-03 04:24:07,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:24:07,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:24:07,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:24:07,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:24:07,247 INFO L87 Difference]: Start difference. First operand 2400 states and 5379 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:14,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:14,184 INFO L93 Difference]: Finished difference Result 3721 states and 8292 transitions. [2021-11-03 04:24:14,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-03 04:24:14,185 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:24:14,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:14,189 INFO L225 Difference]: With dead ends: 3721 [2021-11-03 04:24:14,189 INFO L226 Difference]: Without dead ends: 3721 [2021-11-03 04:24:14,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=618, Invalid=2804, Unknown=0, NotChecked=0, Total=3422 [2021-11-03 04:24:14,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states. [2021-11-03 04:24:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 2429. [2021-11-03 04:24:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 2411 states have (on average 2.257569473247615) internal successors, (5443), 2428 states have internal predecessors, (5443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 5443 transitions. [2021-11-03 04:24:14,227 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 5443 transitions. Word has length 20 [2021-11-03 04:24:14,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:14,227 INFO L470 AbstractCegarLoop]: Abstraction has 2429 states and 5443 transitions. [2021-11-03 04:24:14,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 5443 transitions. [2021-11-03 04:24:14,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:24:14,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:14,228 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:14,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-03 04:24:14,228 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:24:14,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:14,228 INFO L85 PathProgramCache]: Analyzing trace with hash -625283793, now seen corresponding path program 12 times [2021-11-03 04:24:14,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:24:14,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774587984] [2021-11-03 04:24:14,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:14,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:24:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:15,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:24:15,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774587984] [2021-11-03 04:24:15,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774587984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:15,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:15,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:24:15,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845209890] [2021-11-03 04:24:15,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:24:15,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:24:15,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:24:15,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:24:15,119 INFO L87 Difference]: Start difference. First operand 2429 states and 5443 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:22,175 INFO L93 Difference]: Finished difference Result 3807 states and 8476 transitions. [2021-11-03 04:24:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-03 04:24:22,176 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:24:22,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:22,180 INFO L225 Difference]: With dead ends: 3807 [2021-11-03 04:24:22,181 INFO L226 Difference]: Without dead ends: 3807 [2021-11-03 04:24:22,181 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=722, Invalid=3310, Unknown=0, NotChecked=0, Total=4032 [2021-11-03 04:24:22,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3807 states. [2021-11-03 04:24:22,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3807 to 2447. [2021-11-03 04:24:22,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2429 states have (on average 2.2581309180732814) internal successors, (5485), 2446 states have internal predecessors, (5485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:22,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 5485 transitions. [2021-11-03 04:24:22,219 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 5485 transitions. Word has length 20 [2021-11-03 04:24:22,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:22,220 INFO L470 AbstractCegarLoop]: Abstraction has 2447 states and 5485 transitions. [2021-11-03 04:24:22,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 5485 transitions. [2021-11-03 04:24:22,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:24:22,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:22,221 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:22,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-03 04:24:22,221 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:24:22,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:22,221 INFO L85 PathProgramCache]: Analyzing trace with hash 484508927, now seen corresponding path program 13 times [2021-11-03 04:24:22,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:24:22,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258656965] [2021-11-03 04:24:22,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:22,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:24:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:22,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:24:22,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258656965] [2021-11-03 04:24:22,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258656965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:22,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:22,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:24:22,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073205961] [2021-11-03 04:24:22,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:24:22,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:24:22,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:24:22,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:24:22,967 INFO L87 Difference]: Start difference. First operand 2447 states and 5485 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:29,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:29,717 INFO L93 Difference]: Finished difference Result 4161 states and 9331 transitions. [2021-11-03 04:24:29,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-03 04:24:29,737 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:24:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:29,742 INFO L225 Difference]: With dead ends: 4161 [2021-11-03 04:24:29,742 INFO L226 Difference]: Without dead ends: 4161 [2021-11-03 04:24:29,742 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=637, Invalid=3145, Unknown=0, NotChecked=0, Total=3782 [2021-11-03 04:24:29,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4161 states. [2021-11-03 04:24:29,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4161 to 2400. [2021-11-03 04:24:29,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 2382 states have (on average 2.2581863979848866) internal successors, (5379), 2399 states have internal predecessors, (5379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:29,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 5379 transitions. [2021-11-03 04:24:29,779 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 5379 transitions. Word has length 20 [2021-11-03 04:24:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:29,779 INFO L470 AbstractCegarLoop]: Abstraction has 2400 states and 5379 transitions. [2021-11-03 04:24:29,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:29,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 5379 transitions. [2021-11-03 04:24:29,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:24:29,780 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:29,780 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:29,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-03 04:24:29,780 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:24:29,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:29,781 INFO L85 PathProgramCache]: Analyzing trace with hash 971461835, now seen corresponding path program 14 times [2021-11-03 04:24:29,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:24:29,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415781875] [2021-11-03 04:24:29,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:29,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:24:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:30,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:30,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:24:30,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415781875] [2021-11-03 04:24:30,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415781875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:30,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:30,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:24:30,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554400368] [2021-11-03 04:24:30,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:24:30,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:24:30,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:24:30,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:24:30,586 INFO L87 Difference]: Start difference. First operand 2400 states and 5379 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:37,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:37,758 INFO L93 Difference]: Finished difference Result 3714 states and 8279 transitions. [2021-11-03 04:24:37,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-03 04:24:37,759 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:24:37,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:37,764 INFO L225 Difference]: With dead ends: 3714 [2021-11-03 04:24:37,764 INFO L226 Difference]: Without dead ends: 3714 [2021-11-03 04:24:37,764 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=619, Invalid=2921, Unknown=0, NotChecked=0, Total=3540 [2021-11-03 04:24:37,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2021-11-03 04:24:37,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 2439. [2021-11-03 04:24:37,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2439 states, 2421 states have (on average 2.258570838496489) internal successors, (5468), 2438 states have internal predecessors, (5468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:37,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 5468 transitions. [2021-11-03 04:24:37,806 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 5468 transitions. Word has length 20 [2021-11-03 04:24:37,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:37,806 INFO L470 AbstractCegarLoop]: Abstraction has 2439 states and 5468 transitions. [2021-11-03 04:24:37,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 5468 transitions. [2021-11-03 04:24:37,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:24:37,807 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:37,807 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:37,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-03 04:24:37,808 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:24:37,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:37,808 INFO L85 PathProgramCache]: Analyzing trace with hash 2081254555, now seen corresponding path program 15 times [2021-11-03 04:24:37,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:24:37,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311657533] [2021-11-03 04:24:37,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:37,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:24:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:38,595 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:24:38,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311657533] [2021-11-03 04:24:38,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311657533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:38,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:38,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:24:38,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859037841] [2021-11-03 04:24:38,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:24:38,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:24:38,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:24:38,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:24:38,597 INFO L87 Difference]: Start difference. First operand 2439 states and 5468 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:44,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:44,159 INFO L93 Difference]: Finished difference Result 3933 states and 8809 transitions. [2021-11-03 04:24:44,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-03 04:24:44,160 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:24:44,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:44,165 INFO L225 Difference]: With dead ends: 3933 [2021-11-03 04:24:44,165 INFO L226 Difference]: Without dead ends: 3933 [2021-11-03 04:24:44,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=521, Invalid=2449, Unknown=0, NotChecked=0, Total=2970 [2021-11-03 04:24:44,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2021-11-03 04:24:44,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 2429. [2021-11-03 04:24:44,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 2411 states have (on average 2.2583990045624223) internal successors, (5445), 2428 states have internal predecessors, (5445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:44,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 5445 transitions. [2021-11-03 04:24:44,207 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 5445 transitions. Word has length 20 [2021-11-03 04:24:44,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:44,208 INFO L470 AbstractCegarLoop]: Abstraction has 2429 states and 5445 transitions. [2021-11-03 04:24:44,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:44,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 5445 transitions. [2021-11-03 04:24:44,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:24:44,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:44,209 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:44,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-11-03 04:24:44,209 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:24:44,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:44,210 INFO L85 PathProgramCache]: Analyzing trace with hash -280817921, now seen corresponding path program 16 times [2021-11-03 04:24:44,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:24:44,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55319632] [2021-11-03 04:24:44,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:44,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:24:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:45,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:45,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:24:45,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55319632] [2021-11-03 04:24:45,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55319632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:45,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:45,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 04:24:45,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335080374] [2021-11-03 04:24:45,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 04:24:45,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:24:45,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 04:24:45,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:24:45,061 INFO L87 Difference]: Start difference. First operand 2429 states and 5445 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:54,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:54,282 INFO L93 Difference]: Finished difference Result 3806 states and 8480 transitions. [2021-11-03 04:24:54,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-03 04:24:54,282 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:24:54,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:54,287 INFO L225 Difference]: With dead ends: 3806 [2021-11-03 04:24:54,287 INFO L226 Difference]: Without dead ends: 3806 [2021-11-03 04:24:54,287 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=664, Invalid=3242, Unknown=0, NotChecked=0, Total=3906 [2021-11-03 04:24:54,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2021-11-03 04:24:54,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 2429. [2021-11-03 04:24:54,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 2411 states have (on average 2.2583990045624223) internal successors, (5445), 2428 states have internal predecessors, (5445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:54,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 5445 transitions. [2021-11-03 04:24:54,324 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 5445 transitions. Word has length 20 [2021-11-03 04:24:54,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:54,324 INFO L470 AbstractCegarLoop]: Abstraction has 2429 states and 5445 transitions. [2021-11-03 04:24:54,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 5445 transitions. [2021-11-03 04:24:54,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:24:54,325 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:54,326 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:54,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-11-03 04:24:54,326 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:24:54,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:54,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1147231733, now seen corresponding path program 17 times [2021-11-03 04:24:54,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:24:54,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358527330] [2021-11-03 04:24:54,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:54,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:24:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:55,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:24:55,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358527330] [2021-11-03 04:24:55,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358527330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:55,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:55,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:24:55,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327473940] [2021-11-03 04:24:55,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:24:55,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:24:55,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:24:55,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:24:55,404 INFO L87 Difference]: Start difference. First operand 2429 states and 5445 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:02,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:02,007 INFO L93 Difference]: Finished difference Result 3478 states and 7737 transitions. [2021-11-03 04:25:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 04:25:02,008 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:25:02,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:02,012 INFO L225 Difference]: With dead ends: 3478 [2021-11-03 04:25:02,012 INFO L226 Difference]: Without dead ends: 3478 [2021-11-03 04:25:02,012 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=171, Invalid=951, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 04:25:02,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3478 states. [2021-11-03 04:25:02,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3478 to 2429. [2021-11-03 04:25:02,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 2411 states have (on average 2.2583990045624223) internal successors, (5445), 2428 states have internal predecessors, (5445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 5445 transitions. [2021-11-03 04:25:02,050 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 5445 transitions. Word has length 20 [2021-11-03 04:25:02,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:02,051 INFO L470 AbstractCegarLoop]: Abstraction has 2429 states and 5445 transitions. [2021-11-03 04:25:02,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:02,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 5445 transitions. [2021-11-03 04:25:02,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:25:02,052 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:02,052 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:02,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-11-03 04:25:02,052 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:25:02,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:02,053 INFO L85 PathProgramCache]: Analyzing trace with hash 406261119, now seen corresponding path program 18 times [2021-11-03 04:25:02,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:25:02,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511606277] [2021-11-03 04:25:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:02,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:25:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:03,064 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:25:03,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511606277] [2021-11-03 04:25:03,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511606277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:03,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:03,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 04:25:03,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687597854] [2021-11-03 04:25:03,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:25:03,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:25:03,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:25:03,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:25:03,066 INFO L87 Difference]: Start difference. First operand 2429 states and 5445 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:10,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:10,904 INFO L93 Difference]: Finished difference Result 3945 states and 8835 transitions. [2021-11-03 04:25:10,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-03 04:25:10,905 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:25:10,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:10,910 INFO L225 Difference]: With dead ends: 3945 [2021-11-03 04:25:10,910 INFO L226 Difference]: Without dead ends: 3945 [2021-11-03 04:25:10,910 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=474, Invalid=2282, Unknown=0, NotChecked=0, Total=2756 [2021-11-03 04:25:10,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3945 states. [2021-11-03 04:25:10,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3945 to 2431. [2021-11-03 04:25:10,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2413 states have (on average 2.258184832159138) internal successors, (5449), 2430 states have internal predecessors, (5449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 5449 transitions. [2021-11-03 04:25:10,962 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 5449 transitions. Word has length 20 [2021-11-03 04:25:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:10,962 INFO L470 AbstractCegarLoop]: Abstraction has 2431 states and 5449 transitions. [2021-11-03 04:25:10,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 5449 transitions. [2021-11-03 04:25:10,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:25:10,963 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:10,963 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:10,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-11-03 04:25:10,964 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:25:10,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:10,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1552707201, now seen corresponding path program 19 times [2021-11-03 04:25:10,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:25:10,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189620966] [2021-11-03 04:25:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:10,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:25:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:11,904 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:25:11,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189620966] [2021-11-03 04:25:11,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189620966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:11,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:11,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:25:11,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432339520] [2021-11-03 04:25:11,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:25:11,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:25:11,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:25:11,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:25:11,906 INFO L87 Difference]: Start difference. First operand 2431 states and 5449 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:19,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:19,007 INFO L93 Difference]: Finished difference Result 3806 states and 8442 transitions. [2021-11-03 04:25:19,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-03 04:25:19,007 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:25:19,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:19,014 INFO L225 Difference]: With dead ends: 3806 [2021-11-03 04:25:19,014 INFO L226 Difference]: Without dead ends: 3806 [2021-11-03 04:25:19,015 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=554, Invalid=2638, Unknown=0, NotChecked=0, Total=3192 [2021-11-03 04:25:19,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2021-11-03 04:25:19,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 2431. [2021-11-03 04:25:19,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2413 states have (on average 2.258184832159138) internal successors, (5449), 2430 states have internal predecessors, (5449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:19,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 5449 transitions. [2021-11-03 04:25:19,056 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 5449 transitions. Word has length 20 [2021-11-03 04:25:19,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:19,056 INFO L470 AbstractCegarLoop]: Abstraction has 2431 states and 5449 transitions. [2021-11-03 04:25:19,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:19,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 5449 transitions. [2021-11-03 04:25:19,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:25:19,057 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:19,057 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:19,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-11-03 04:25:19,057 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:25:19,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:19,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1896796085, now seen corresponding path program 20 times [2021-11-03 04:25:19,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:25:19,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333919951] [2021-11-03 04:25:19,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:19,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:25:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:19,901 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:25:19,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333919951] [2021-11-03 04:25:19,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333919951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:19,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:19,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:25:19,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507780926] [2021-11-03 04:25:19,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:25:19,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:25:19,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:25:19,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:25:19,902 INFO L87 Difference]: Start difference. First operand 2431 states and 5449 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:26,795 INFO L93 Difference]: Finished difference Result 4110 states and 9219 transitions. [2021-11-03 04:25:26,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-03 04:25:26,796 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:25:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:26,801 INFO L225 Difference]: With dead ends: 4110 [2021-11-03 04:25:26,801 INFO L226 Difference]: Without dead ends: 4110 [2021-11-03 04:25:26,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=529, Invalid=2663, Unknown=0, NotChecked=0, Total=3192 [2021-11-03 04:25:26,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2021-11-03 04:25:26,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 2431. [2021-11-03 04:25:26,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2413 states have (on average 2.258184832159138) internal successors, (5449), 2430 states have internal predecessors, (5449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 5449 transitions. [2021-11-03 04:25:26,840 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 5449 transitions. Word has length 20 [2021-11-03 04:25:26,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:26,840 INFO L470 AbstractCegarLoop]: Abstraction has 2431 states and 5449 transitions. [2021-11-03 04:25:26,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:26,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 5449 transitions. [2021-11-03 04:25:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:25:26,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:26,841 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:26,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-11-03 04:25:26,842 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:25:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:26,842 INFO L85 PathProgramCache]: Analyzing trace with hash 868629309, now seen corresponding path program 21 times [2021-11-03 04:25:26,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:25:26,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418878612] [2021-11-03 04:25:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:26,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:25:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:27,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:27,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:25:27,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418878612] [2021-11-03 04:25:27,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418878612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:27,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:27,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:25:27,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848601204] [2021-11-03 04:25:27,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:25:27,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:25:27,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:25:27,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:25:27,651 INFO L87 Difference]: Start difference. First operand 2431 states and 5449 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:33,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:33,530 INFO L93 Difference]: Finished difference Result 4163 states and 9389 transitions. [2021-11-03 04:25:33,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-03 04:25:33,530 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:25:33,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:33,535 INFO L225 Difference]: With dead ends: 4163 [2021-11-03 04:25:33,535 INFO L226 Difference]: Without dead ends: 4163 [2021-11-03 04:25:33,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=474, Invalid=2178, Unknown=0, NotChecked=0, Total=2652 [2021-11-03 04:25:33,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4163 states. [2021-11-03 04:25:33,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4163 to 2402. [2021-11-03 04:25:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 2384 states have (on average 2.2579697986577183) internal successors, (5383), 2401 states have internal predecessors, (5383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 5383 transitions. [2021-11-03 04:25:33,576 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 5383 transitions. Word has length 20 [2021-11-03 04:25:33,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:33,576 INFO L470 AbstractCegarLoop]: Abstraction has 2402 states and 5383 transitions. [2021-11-03 04:25:33,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:33,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 5383 transitions. [2021-11-03 04:25:33,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:25:33,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:33,578 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:33,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-11-03 04:25:33,579 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:25:33,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:33,579 INFO L85 PathProgramCache]: Analyzing trace with hash -102718551, now seen corresponding path program 22 times [2021-11-03 04:25:33,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:25:33,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749364653] [2021-11-03 04:25:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:33,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:25:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:34,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:25:34,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749364653] [2021-11-03 04:25:34,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749364653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:34,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:34,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 04:25:34,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265964265] [2021-11-03 04:25:34,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 04:25:34,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:25:34,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 04:25:34,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:25:34,306 INFO L87 Difference]: Start difference. First operand 2402 states and 5383 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:38,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:38,598 INFO L93 Difference]: Finished difference Result 3830 states and 8519 transitions. [2021-11-03 04:25:38,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 04:25:38,598 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:25:38,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:38,603 INFO L225 Difference]: With dead ends: 3830 [2021-11-03 04:25:38,603 INFO L226 Difference]: Without dead ends: 3830 [2021-11-03 04:25:38,603 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=407, Invalid=1663, Unknown=0, NotChecked=0, Total=2070 [2021-11-03 04:25:38,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3830 states. [2021-11-03 04:25:38,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3830 to 2459. [2021-11-03 04:25:38,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 2441 states have (on average 2.2617779598525196) internal successors, (5521), 2458 states have internal predecessors, (5521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:38,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 5521 transitions. [2021-11-03 04:25:38,666 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 5521 transitions. Word has length 20 [2021-11-03 04:25:38,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:38,666 INFO L470 AbstractCegarLoop]: Abstraction has 2459 states and 5521 transitions. [2021-11-03 04:25:38,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:38,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 5521 transitions. [2021-11-03 04:25:38,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:25:38,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:38,667 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:38,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-11-03 04:25:38,667 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:25:38,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:38,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1395189081, now seen corresponding path program 23 times [2021-11-03 04:25:38,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:25:38,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509008699] [2021-11-03 04:25:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:38,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:25:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:39,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:25:39,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509008699] [2021-11-03 04:25:39,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509008699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:39,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:39,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 04:25:39,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612128029] [2021-11-03 04:25:39,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 04:25:39,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:25:39,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 04:25:39,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:25:39,306 INFO L87 Difference]: Start difference. First operand 2459 states and 5521 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:43,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:43,749 INFO L93 Difference]: Finished difference Result 4545 states and 10116 transitions. [2021-11-03 04:25:43,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-03 04:25:43,750 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:25:43,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:43,756 INFO L225 Difference]: With dead ends: 4545 [2021-11-03 04:25:43,756 INFO L226 Difference]: Without dead ends: 4545 [2021-11-03 04:25:43,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=424, Invalid=1738, Unknown=0, NotChecked=0, Total=2162 [2021-11-03 04:25:43,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2021-11-03 04:25:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 2453. [2021-11-03 04:25:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 2435 states have (on average 2.2595482546201233) internal successors, (5502), 2452 states have internal predecessors, (5502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:43,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 5502 transitions. [2021-11-03 04:25:43,800 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 5502 transitions. Word has length 20 [2021-11-03 04:25:43,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:43,801 INFO L470 AbstractCegarLoop]: Abstraction has 2453 states and 5502 transitions. [2021-11-03 04:25:43,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:43,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 5502 transitions. [2021-11-03 04:25:43,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:25:43,802 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:43,802 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:43,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-11-03 04:25:43,802 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:25:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:43,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1795820947, now seen corresponding path program 24 times [2021-11-03 04:25:43,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:25:43,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61227740] [2021-11-03 04:25:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:43,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:25:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:44,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:44,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:25:44,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61227740] [2021-11-03 04:25:44,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61227740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:44,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:44,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:25:44,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489974204] [2021-11-03 04:25:44,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:25:44,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:25:44,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:25:44,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:25:44,557 INFO L87 Difference]: Start difference. First operand 2453 states and 5502 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:50,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:50,771 INFO L93 Difference]: Finished difference Result 4369 states and 9735 transitions. [2021-11-03 04:25:50,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-03 04:25:50,772 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:25:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:50,778 INFO L225 Difference]: With dead ends: 4369 [2021-11-03 04:25:50,778 INFO L226 Difference]: Without dead ends: 4369 [2021-11-03 04:25:50,778 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=475, Invalid=2075, Unknown=0, NotChecked=0, Total=2550 [2021-11-03 04:25:50,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4369 states. [2021-11-03 04:25:50,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4369 to 2441. [2021-11-03 04:25:50,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2441 states, 2423 states have (on average 2.2575319851423856) internal successors, (5470), 2440 states have internal predecessors, (5470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:50,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2441 states to 2441 states and 5470 transitions. [2021-11-03 04:25:50,821 INFO L78 Accepts]: Start accepts. Automaton has 2441 states and 5470 transitions. Word has length 20 [2021-11-03 04:25:50,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:50,821 INFO L470 AbstractCegarLoop]: Abstraction has 2441 states and 5470 transitions. [2021-11-03 04:25:50,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:50,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2441 states and 5470 transitions. [2021-11-03 04:25:50,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:25:50,823 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:50,823 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:50,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-11-03 04:25:50,823 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:25:50,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:50,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1138480567, now seen corresponding path program 25 times [2021-11-03 04:25:50,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:25:50,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847276207] [2021-11-03 04:25:50,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:50,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:25:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:51,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:25:51,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847276207] [2021-11-03 04:25:51,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847276207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:51,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:51,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:25:51,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667218412] [2021-11-03 04:25:51,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:25:51,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:25:51,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:25:51,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:25:51,498 INFO L87 Difference]: Start difference. First operand 2441 states and 5470 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:56,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:56,898 INFO L93 Difference]: Finished difference Result 4399 states and 9789 transitions. [2021-11-03 04:25:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-03 04:25:56,899 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:25:56,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:56,905 INFO L225 Difference]: With dead ends: 4399 [2021-11-03 04:25:56,905 INFO L226 Difference]: Without dead ends: 4399 [2021-11-03 04:25:56,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=526, Invalid=2230, Unknown=0, NotChecked=0, Total=2756 [2021-11-03 04:25:56,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2021-11-03 04:25:56,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 2435. [2021-11-03 04:25:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2435 states, 2417 states have (on average 2.2577575506826646) internal successors, (5457), 2434 states have internal predecessors, (5457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:56,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 5457 transitions. [2021-11-03 04:25:56,950 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 5457 transitions. Word has length 20 [2021-11-03 04:25:56,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:56,950 INFO L470 AbstractCegarLoop]: Abstraction has 2435 states and 5457 transitions. [2021-11-03 04:25:56,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:56,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 5457 transitions. [2021-11-03 04:25:56,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:25:56,952 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:56,952 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:56,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-11-03 04:25:56,952 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:25:56,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:56,952 INFO L85 PathProgramCache]: Analyzing trace with hash 511860701, now seen corresponding path program 26 times [2021-11-03 04:25:56,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:25:56,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750300027] [2021-11-03 04:25:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:56,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:25:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:57,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:25:57,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750300027] [2021-11-03 04:25:57,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750300027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:57,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:57,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:25:57,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569810901] [2021-11-03 04:25:57,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:25:57,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:25:57,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:25:57,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:25:57,676 INFO L87 Difference]: Start difference. First operand 2435 states and 5457 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:04,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:04,116 INFO L93 Difference]: Finished difference Result 4265 states and 9509 transitions. [2021-11-03 04:26:04,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-03 04:26:04,117 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:26:04,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:04,122 INFO L225 Difference]: With dead ends: 4265 [2021-11-03 04:26:04,122 INFO L226 Difference]: Without dead ends: 4265 [2021-11-03 04:26:04,122 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=610, Invalid=2360, Unknown=0, NotChecked=0, Total=2970 [2021-11-03 04:26:04,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4265 states. [2021-11-03 04:26:04,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4265 to 2429. [2021-11-03 04:26:04,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 2411 states have (on average 2.257984238905019) internal successors, (5444), 2428 states have internal predecessors, (5444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 5444 transitions. [2021-11-03 04:26:04,183 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 5444 transitions. Word has length 20 [2021-11-03 04:26:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:04,183 INFO L470 AbstractCegarLoop]: Abstraction has 2429 states and 5444 transitions. [2021-11-03 04:26:04,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 5444 transitions. [2021-11-03 04:26:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:26:04,184 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:04,184 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:04,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-11-03 04:26:04,184 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:26:04,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:04,185 INFO L85 PathProgramCache]: Analyzing trace with hash -220730803, now seen corresponding path program 27 times [2021-11-03 04:26:04,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:26:04,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550980666] [2021-11-03 04:26:04,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:04,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:26:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:26:04,924 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:26:04,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550980666] [2021-11-03 04:26:04,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550980666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:04,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:04,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:26:04,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220521656] [2021-11-03 04:26:04,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:26:04,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:26:04,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:26:04,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:26:04,926 INFO L87 Difference]: Start difference. First operand 2429 states and 5444 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:10,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:10,782 INFO L93 Difference]: Finished difference Result 4200 states and 9367 transitions. [2021-11-03 04:26:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-03 04:26:10,783 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:26:10,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:10,788 INFO L225 Difference]: With dead ends: 4200 [2021-11-03 04:26:10,788 INFO L226 Difference]: Without dead ends: 4200 [2021-11-03 04:26:10,788 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=540, Invalid=2322, Unknown=0, NotChecked=0, Total=2862 [2021-11-03 04:26:10,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4200 states. [2021-11-03 04:26:10,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4200 to 2424. [2021-11-03 04:26:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2406 states have (on average 2.2581047381546133) internal successors, (5433), 2423 states have internal predecessors, (5433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 5433 transitions. [2021-11-03 04:26:10,825 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 5433 transitions. Word has length 20 [2021-11-03 04:26:10,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:10,825 INFO L470 AbstractCegarLoop]: Abstraction has 2424 states and 5433 transitions. [2021-11-03 04:26:10,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:10,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 5433 transitions. [2021-11-03 04:26:10,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:26:10,826 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:10,826 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:10,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-11-03 04:26:10,826 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:26:10,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:10,826 INFO L85 PathProgramCache]: Analyzing trace with hash 889061917, now seen corresponding path program 28 times [2021-11-03 04:26:10,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:26:10,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488478006] [2021-11-03 04:26:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:10,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:26:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:26:11,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:26:11,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488478006] [2021-11-03 04:26:11,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488478006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:11,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:11,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 04:26:11,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922653424] [2021-11-03 04:26:11,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 04:26:11,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:26:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 04:26:11,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:26:11,576 INFO L87 Difference]: Start difference. First operand 2424 states and 5433 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:17,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:17,439 INFO L93 Difference]: Finished difference Result 4221 states and 9408 transitions. [2021-11-03 04:26:17,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-03 04:26:17,439 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:26:17,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:17,444 INFO L225 Difference]: With dead ends: 4221 [2021-11-03 04:26:17,444 INFO L226 Difference]: Without dead ends: 4221 [2021-11-03 04:26:17,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=507, Invalid=2355, Unknown=0, NotChecked=0, Total=2862 [2021-11-03 04:26:17,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2021-11-03 04:26:17,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 2285. [2021-11-03 04:26:17,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2285 states, 2267 states have (on average 2.2448169386854873) internal successors, (5089), 2284 states have internal predecessors, (5089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:17,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2285 states to 2285 states and 5089 transitions. [2021-11-03 04:26:17,481 INFO L78 Accepts]: Start accepts. Automaton has 2285 states and 5089 transitions. Word has length 20 [2021-11-03 04:26:17,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:17,481 INFO L470 AbstractCegarLoop]: Abstraction has 2285 states and 5089 transitions. [2021-11-03 04:26:17,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:17,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2285 states and 5089 transitions. [2021-11-03 04:26:17,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-03 04:26:17,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:17,482 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:17,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-11-03 04:26:17,482 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:26:17,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:17,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1281049064, now seen corresponding path program 1 times [2021-11-03 04:26:17,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:26:17,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438113741] [2021-11-03 04:26:17,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:17,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:26:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:26:17,842 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:26:17,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438113741] [2021-11-03 04:26:17,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438113741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:17,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:17,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 04:26:17,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785014731] [2021-11-03 04:26:17,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:26:17,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:26:17,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:26:17,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:26:17,843 INFO L87 Difference]: Start difference. First operand 2285 states and 5089 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:18,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:18,783 INFO L93 Difference]: Finished difference Result 2630 states and 5761 transitions. [2021-11-03 04:26:18,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:26:18,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-03 04:26:18,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:18,787 INFO L225 Difference]: With dead ends: 2630 [2021-11-03 04:26:18,787 INFO L226 Difference]: Without dead ends: 2610 [2021-11-03 04:26:18,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:26:18,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2021-11-03 04:26:18,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 2283. [2021-11-03 04:26:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2265 states have (on average 2.244150110375276) internal successors, (5083), 2282 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 5083 transitions. [2021-11-03 04:26:18,821 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 5083 transitions. Word has length 21 [2021-11-03 04:26:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:18,821 INFO L470 AbstractCegarLoop]: Abstraction has 2283 states and 5083 transitions. [2021-11-03 04:26:18,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 5083 transitions. [2021-11-03 04:26:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:26:18,822 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:18,822 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:18,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-11-03 04:26:18,823 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:26:18,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:18,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1212137413, now seen corresponding path program 1 times [2021-11-03 04:26:18,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:26:18,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427899972] [2021-11-03 04:26:18,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:18,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:26:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:26:19,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:26:19,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427899972] [2021-11-03 04:26:19,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427899972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:19,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:19,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 04:26:19,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729669822] [2021-11-03 04:26:19,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 04:26:19,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:26:19,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 04:26:19,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:26:19,155 INFO L87 Difference]: Start difference. First operand 2283 states and 5083 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:20,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:20,246 INFO L93 Difference]: Finished difference Result 2870 states and 6281 transitions. [2021-11-03 04:26:20,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:26:20,246 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:26:20,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:20,250 INFO L225 Difference]: With dead ends: 2870 [2021-11-03 04:26:20,250 INFO L226 Difference]: Without dead ends: 2870 [2021-11-03 04:26:20,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:26:20,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-11-03 04:26:20,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2332. [2021-11-03 04:26:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2314 states have (on average 2.2510803802938635) internal successors, (5209), 2331 states have internal predecessors, (5209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 5209 transitions. [2021-11-03 04:26:20,302 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 5209 transitions. Word has length 23 [2021-11-03 04:26:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:20,302 INFO L470 AbstractCegarLoop]: Abstraction has 2332 states and 5209 transitions. [2021-11-03 04:26:20,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 5209 transitions. [2021-11-03 04:26:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:26:20,304 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:20,304 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:20,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-11-03 04:26:20,304 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:26:20,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:20,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1933307437, now seen corresponding path program 2 times [2021-11-03 04:26:20,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:26:20,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087310488] [2021-11-03 04:26:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:20,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:26:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:26:20,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:26:20,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087310488] [2021-11-03 04:26:20,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087310488] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:26:20,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796330592] [2021-11-03 04:26:20,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:26:20,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:26:20,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:26:20,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:26:20,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:26:21,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 04:26:21,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:26:21,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 103 conjunts are in the unsatisfiable core [2021-11-03 04:26:21,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:21,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:26:21,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:26:21,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:26:21,548 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-11-03 04:26:21,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 225 treesize of output 165 [2021-11-03 04:26:21,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:26:21,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:26:21,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:26:21,604 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-11-03 04:26:21,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 165 treesize of output 105 [2021-11-03 04:26:21,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 776 treesize of output 760 [2021-11-03 04:26:23,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:26:23,135 INFO L354 Elim1Store]: treesize reduction 441, result has 9.1 percent of original size [2021-11-03 04:26:23,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 217 treesize of output 164 [2021-11-03 04:26:23,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:26:23,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:26:23,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:26:23,274 INFO L354 Elim1Store]: treesize reduction 431, result has 8.9 percent of original size [2021-11-03 04:26:23,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 132 treesize of output 128 [2021-11-03 04:26:23,594 INFO L354 Elim1Store]: treesize reduction 200, result has 12.7 percent of original size [2021-11-03 04:26:23,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 181 treesize of output 126 [2021-11-03 04:26:23,653 INFO L354 Elim1Store]: treesize reduction 210, result has 16.0 percent of original size [2021-11-03 04:26:23,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 135 treesize of output 119 [2021-11-03 04:26:23,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:26:23,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:26:23,829 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 04:26:23,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 95 treesize of output 48 [2021-11-03 04:26:24,031 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-03 04:26:24,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 32 [2021-11-03 04:26:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:26:24,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:25,810 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:26:25,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-03 04:26:25,814 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:26:25,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-03 04:26:45,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:26:45,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796330592] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:26:45,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1886941490] [2021-11-03 04:26:45,170 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 04:26:45,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:26:45,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 38 [2021-11-03 04:26:45,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269309243] [2021-11-03 04:26:45,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-03 04:26:45,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:26:45,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-03 04:26:45,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1351, Unknown=10, NotChecked=0, Total=1482 [2021-11-03 04:26:45,176 INFO L87 Difference]: Start difference. First operand 2332 states and 5209 transitions. Second operand has 39 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 38 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:33,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:29:33,494 INFO L93 Difference]: Finished difference Result 4575 states and 9768 transitions. [2021-11-03 04:29:33,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-11-03 04:29:33,495 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 38 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:29:33,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:29:33,500 INFO L225 Difference]: With dead ends: 4575 [2021-11-03 04:29:33,500 INFO L226 Difference]: Without dead ends: 4573 [2021-11-03 04:29:33,501 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2397 ImplicationChecksByTransitivity, 37.2s TimeCoverageRelationStatistics Valid=1506, Invalid=8988, Unknown=12, NotChecked=0, Total=10506 [2021-11-03 04:29:33,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4573 states. [2021-11-03 04:29:33,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4573 to 2897. [2021-11-03 04:29:33,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2879 states have (on average 2.273011462313303) internal successors, (6544), 2896 states have internal predecessors, (6544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:33,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 6544 transitions. [2021-11-03 04:29:33,549 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 6544 transitions. Word has length 23 [2021-11-03 04:29:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:29:33,550 INFO L470 AbstractCegarLoop]: Abstraction has 2897 states and 6544 transitions. [2021-11-03 04:29:33,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 38 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:33,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 6544 transitions. [2021-11-03 04:29:33,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:29:33,551 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:29:33,551 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:29:33,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:29:33,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95599c43-fec0-4da3-828e-45a1babc3bc2/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:29:33,755 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:29:33,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:29:33,755 INFO L85 PathProgramCache]: Analyzing trace with hash 951057770, now seen corresponding path program 1 times [2021-11-03 04:29:33,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:29:33,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423548511] [2021-11-03 04:29:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:29:33,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:29:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:29:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:29:35,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:29:35,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423548511] [2021-11-03 04:29:35,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423548511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:29:35,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:29:35,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 04:29:35,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748355330] [2021-11-03 04:29:35,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:29:35,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:29:35,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:29:35,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:29:35,353 INFO L87 Difference]: Start difference. First operand 2897 states and 6544 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:38,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:29:38,522 INFO L93 Difference]: Finished difference Result 3935 states and 8760 transitions. [2021-11-03 04:29:38,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:29:38,522 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:29:38,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:29:38,528 INFO L225 Difference]: With dead ends: 3935 [2021-11-03 04:29:38,528 INFO L226 Difference]: Without dead ends: 3906 [2021-11-03 04:29:38,528 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:29:38,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3906 states. [2021-11-03 04:29:38,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3906 to 2900. [2021-11-03 04:29:38,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2900 states, 2882 states have (on average 2.2734212352532963) internal successors, (6552), 2899 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:38,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 6552 transitions. [2021-11-03 04:29:38,585 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 6552 transitions. Word has length 23 [2021-11-03 04:29:38,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:29:38,586 INFO L470 AbstractCegarLoop]: Abstraction has 2900 states and 6552 transitions. [2021-11-03 04:29:38,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:38,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 6552 transitions. [2021-11-03 04:29:38,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:29:38,587 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:29:38,587 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:29:38,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-11-03 04:29:38,587 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:29:38,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:29:38,588 INFO L85 PathProgramCache]: Analyzing trace with hash 503014436, now seen corresponding path program 2 times [2021-11-03 04:29:38,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:29:38,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095568681] [2021-11-03 04:29:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:29:38,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:29:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:29:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:29:39,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:29:39,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095568681] [2021-11-03 04:29:39,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095568681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:29:39,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:29:39,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 04:29:39,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257732441] [2021-11-03 04:29:39,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-03 04:29:39,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:29:39,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-03 04:29:39,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:29:39,643 INFO L87 Difference]: Start difference. First operand 2900 states and 6552 transitions. Second operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:29:48,376 INFO L93 Difference]: Finished difference Result 5520 states and 12338 transitions. [2021-11-03 04:29:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-03 04:29:48,377 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:29:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:29:48,384 INFO L225 Difference]: With dead ends: 5520 [2021-11-03 04:29:48,384 INFO L226 Difference]: Without dead ends: 5520 [2021-11-03 04:29:48,384 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=460, Invalid=2962, Unknown=0, NotChecked=0, Total=3422 [2021-11-03 04:29:48,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5520 states. [2021-11-03 04:29:48,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5520 to 3130. [2021-11-03 04:29:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3130 states, 3112 states have (on average 2.2847043701799485) internal successors, (7110), 3129 states have internal predecessors, (7110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:48,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 7110 transitions. [2021-11-03 04:29:48,443 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 7110 transitions. Word has length 23 [2021-11-03 04:29:48,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:29:48,444 INFO L470 AbstractCegarLoop]: Abstraction has 3130 states and 7110 transitions. [2021-11-03 04:29:48,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:48,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 7110 transitions. [2021-11-03 04:29:48,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:29:48,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:29:48,446 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:29:48,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-11-03 04:29:48,446 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:29:48,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:29:48,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1760118552, now seen corresponding path program 3 times [2021-11-03 04:29:48,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:29:48,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935079747] [2021-11-03 04:29:48,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:29:48,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:29:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:29:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:29:48,892 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:29:48,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935079747] [2021-11-03 04:29:48,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935079747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:29:48,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:29:48,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:29:48,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289160018] [2021-11-03 04:29:48,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:29:48,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:29:48,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:29:48,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:29:48,894 INFO L87 Difference]: Start difference. First operand 3130 states and 7110 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:50,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:29:50,438 INFO L93 Difference]: Finished difference Result 3380 states and 7580 transitions. [2021-11-03 04:29:50,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 04:29:50,438 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:29:50,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:29:50,442 INFO L225 Difference]: With dead ends: 3380 [2021-11-03 04:29:50,442 INFO L226 Difference]: Without dead ends: 3380 [2021-11-03 04:29:50,442 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2021-11-03 04:29:50,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3380 states. [2021-11-03 04:29:50,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3380 to 3146. [2021-11-03 04:29:50,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 3128 states have (on average 2.284526854219949) internal successors, (7146), 3145 states have internal predecessors, (7146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 7146 transitions. [2021-11-03 04:29:50,486 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 7146 transitions. Word has length 23 [2021-11-03 04:29:50,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:29:50,486 INFO L470 AbstractCegarLoop]: Abstraction has 3146 states and 7146 transitions. [2021-11-03 04:29:50,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:50,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 7146 transitions. [2021-11-03 04:29:50,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:29:50,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:29:50,488 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:29:50,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-11-03 04:29:50,488 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:29:50,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:29:50,489 INFO L85 PathProgramCache]: Analyzing trace with hash -40926092, now seen corresponding path program 4 times [2021-11-03 04:29:50,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:29:50,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519812779] [2021-11-03 04:29:50,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:29:50,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:29:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:29:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:29:51,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:29:51,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519812779] [2021-11-03 04:29:51,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519812779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:29:51,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:29:51,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 04:29:51,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251470767] [2021-11-03 04:29:51,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-03 04:29:51,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:29:51,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-03 04:29:51,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:29:51,707 INFO L87 Difference]: Start difference. First operand 3146 states and 7146 transitions. Second operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:01,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:30:01,293 INFO L93 Difference]: Finished difference Result 6502 states and 14539 transitions. [2021-11-03 04:30:01,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-03 04:30:01,293 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:30:01,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:30:01,303 INFO L225 Difference]: With dead ends: 6502 [2021-11-03 04:30:01,303 INFO L226 Difference]: Without dead ends: 6502 [2021-11-03 04:30:01,304 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=478, Invalid=3062, Unknown=0, NotChecked=0, Total=3540 [2021-11-03 04:30:01,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6502 states. [2021-11-03 04:30:01,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6502 to 3139. [2021-11-03 04:30:01,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 3121 states have (on average 2.2826017302146746) internal successors, (7124), 3138 states have internal predecessors, (7124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 7124 transitions. [2021-11-03 04:30:01,369 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 7124 transitions. Word has length 23 [2021-11-03 04:30:01,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:30:01,369 INFO L470 AbstractCegarLoop]: Abstraction has 3139 states and 7124 transitions. [2021-11-03 04:30:01,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 7124 transitions. [2021-11-03 04:30:01,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:30:01,371 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:30:01,371 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:30:01,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-11-03 04:30:01,372 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:30:01,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:30:01,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1216178024, now seen corresponding path program 5 times [2021-11-03 04:30:01,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:30:01,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805544764] [2021-11-03 04:30:01,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:30:01,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:30:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:30:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:30:01,838 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:30:01,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805544764] [2021-11-03 04:30:01,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805544764] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:30:01,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:30:01,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:30:01,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286770656] [2021-11-03 04:30:01,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:30:01,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:30:01,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:30:01,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:30:01,840 INFO L87 Difference]: Start difference. First operand 3139 states and 7124 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:03,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:30:03,764 INFO L93 Difference]: Finished difference Result 3631 states and 8066 transitions. [2021-11-03 04:30:03,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:30:03,765 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:30:03,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:30:03,770 INFO L225 Difference]: With dead ends: 3631 [2021-11-03 04:30:03,770 INFO L226 Difference]: Without dead ends: 3631 [2021-11-03 04:30:03,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:30:03,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2021-11-03 04:30:03,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3137. [2021-11-03 04:30:03,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3137 states, 3119 states have (on average 2.2821417120872076) internal successors, (7118), 3136 states have internal predecessors, (7118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:03,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3137 states to 3137 states and 7118 transitions. [2021-11-03 04:30:03,817 INFO L78 Accepts]: Start accepts. Automaton has 3137 states and 7118 transitions. Word has length 23 [2021-11-03 04:30:03,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:30:03,817 INFO L470 AbstractCegarLoop]: Abstraction has 3137 states and 7118 transitions. [2021-11-03 04:30:03,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3137 states and 7118 transitions. [2021-11-03 04:30:03,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:30:03,819 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:30:03,819 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:30:03,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-11-03 04:30:03,819 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:30:03,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:30:03,820 INFO L85 PathProgramCache]: Analyzing trace with hash -531121670, now seen corresponding path program 6 times [2021-11-03 04:30:03,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:30:03,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887442246] [2021-11-03 04:30:03,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:30:03,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:30:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:30:05,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:30:05,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:30:05,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887442246] [2021-11-03 04:30:05,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887442246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:30:05,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:30:05,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 04:30:05,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125508329] [2021-11-03 04:30:05,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-03 04:30:05,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:30:05,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-03 04:30:05,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:30:05,069 INFO L87 Difference]: Start difference. First operand 3137 states and 7118 transitions. Second operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:15,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:30:15,304 INFO L93 Difference]: Finished difference Result 6345 states and 14203 transitions. [2021-11-03 04:30:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-03 04:30:15,305 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:30:15,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:30:15,313 INFO L225 Difference]: With dead ends: 6345 [2021-11-03 04:30:15,314 INFO L226 Difference]: Without dead ends: 6345 [2021-11-03 04:30:15,314 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=472, Invalid=3068, Unknown=0, NotChecked=0, Total=3540 [2021-11-03 04:30:15,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6345 states. [2021-11-03 04:30:15,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6345 to 3130. [2021-11-03 04:30:15,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3130 states, 3112 states have (on average 2.2824550128534704) internal successors, (7103), 3129 states have internal predecessors, (7103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 7103 transitions. [2021-11-03 04:30:15,373 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 7103 transitions. Word has length 23 [2021-11-03 04:30:15,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:30:15,373 INFO L470 AbstractCegarLoop]: Abstraction has 3130 states and 7103 transitions. [2021-11-03 04:30:15,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:15,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 7103 transitions. [2021-11-03 04:30:15,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:30:15,375 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:30:15,375 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:30:15,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-11-03 04:30:15,375 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:30:15,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:30:15,375 INFO L85 PathProgramCache]: Analyzing trace with hash 725982446, now seen corresponding path program 7 times [2021-11-03 04:30:15,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:30:15,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080089637] [2021-11-03 04:30:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:30:15,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:30:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:30:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:30:15,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:30:15,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080089637] [2021-11-03 04:30:15,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080089637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:30:15,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:30:15,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:30:15,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901501193] [2021-11-03 04:30:15,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:30:15,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:30:15,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:30:15,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:30:15,732 INFO L87 Difference]: Start difference. First operand 3130 states and 7103 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:17,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:30:17,837 INFO L93 Difference]: Finished difference Result 3575 states and 7953 transitions. [2021-11-03 04:30:17,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 04:30:17,838 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:30:17,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:30:17,842 INFO L225 Difference]: With dead ends: 3575 [2021-11-03 04:30:17,842 INFO L226 Difference]: Without dead ends: 3575 [2021-11-03 04:30:17,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:30:17,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2021-11-03 04:30:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 3131. [2021-11-03 04:30:17,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 3113 states have (on average 2.2817218117571474) internal successors, (7103), 3130 states have internal predecessors, (7103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:17,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 7103 transitions. [2021-11-03 04:30:17,885 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 7103 transitions. Word has length 23 [2021-11-03 04:30:17,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:30:17,885 INFO L470 AbstractCegarLoop]: Abstraction has 3131 states and 7103 transitions. [2021-11-03 04:30:17,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:17,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 7103 transitions. [2021-11-03 04:30:17,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:30:17,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:30:17,887 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:30:17,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-11-03 04:30:17,887 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:30:17,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:30:17,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1692487510, now seen corresponding path program 8 times [2021-11-03 04:30:17,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:30:17,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750174768] [2021-11-03 04:30:17,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:30:17,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:30:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:30:19,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:30:19,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:30:19,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750174768] [2021-11-03 04:30:19,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750174768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:30:19,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:30:19,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 04:30:19,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618314522] [2021-11-03 04:30:19,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-03 04:30:19,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:30:19,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-03 04:30:19,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:30:19,119 INFO L87 Difference]: Start difference. First operand 3131 states and 7103 transitions. Second operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:29,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:30:29,838 INFO L93 Difference]: Finished difference Result 6268 states and 14034 transitions. [2021-11-03 04:30:29,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-03 04:30:29,839 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:30:29,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:30:29,849 INFO L225 Difference]: With dead ends: 6268 [2021-11-03 04:30:29,849 INFO L226 Difference]: Without dead ends: 6268 [2021-11-03 04:30:29,849 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=518, Invalid=3264, Unknown=0, NotChecked=0, Total=3782 [2021-11-03 04:30:29,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6268 states. [2021-11-03 04:30:29,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6268 to 3130. [2021-11-03 04:30:29,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3130 states, 3112 states have (on average 2.2818123393316196) internal successors, (7101), 3129 states have internal predecessors, (7101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:29,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 7101 transitions. [2021-11-03 04:30:29,913 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 7101 transitions. Word has length 23 [2021-11-03 04:30:29,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:30:29,913 INFO L470 AbstractCegarLoop]: Abstraction has 3130 states and 7101 transitions. [2021-11-03 04:30:29,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 7101 transitions. [2021-11-03 04:30:29,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:30:29,915 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:30:29,915 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:30:29,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-11-03 04:30:29,915 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:30:29,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:30:29,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1345375670, now seen corresponding path program 9 times [2021-11-03 04:30:29,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:30:29,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512214990] [2021-11-03 04:30:29,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:30:29,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:30:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:30:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:30:30,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:30:30,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512214990] [2021-11-03 04:30:30,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512214990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:30:30,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:30:30,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:30:30,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699140985] [2021-11-03 04:30:30,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:30:30,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:30:30,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:30:30,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:30:30,275 INFO L87 Difference]: Start difference. First operand 3130 states and 7101 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:32,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:30:32,764 INFO L93 Difference]: Finished difference Result 3594 states and 7991 transitions. [2021-11-03 04:30:32,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 04:30:32,764 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:30:32,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:30:32,769 INFO L225 Difference]: With dead ends: 3594 [2021-11-03 04:30:32,769 INFO L226 Difference]: Without dead ends: 3594 [2021-11-03 04:30:32,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2021-11-03 04:30:32,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2021-11-03 04:30:32,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3128. [2021-11-03 04:30:32,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 3110 states have (on average 2.2819935691318327) internal successors, (7097), 3127 states have internal predecessors, (7097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:32,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 7097 transitions. [2021-11-03 04:30:32,851 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 7097 transitions. Word has length 23 [2021-11-03 04:30:32,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:30:32,851 INFO L470 AbstractCegarLoop]: Abstraction has 3128 states and 7097 transitions. [2021-11-03 04:30:32,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:32,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 7097 transitions. [2021-11-03 04:30:32,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:30:32,854 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:30:32,854 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:30:32,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-11-03 04:30:32,855 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:30:32,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:30:32,856 INFO L85 PathProgramCache]: Analyzing trace with hash -12072080, now seen corresponding path program 10 times [2021-11-03 04:30:32,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:30:32,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105028751] [2021-11-03 04:30:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:30:32,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:30:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:30:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:30:33,863 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:30:33,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105028751] [2021-11-03 04:30:33,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105028751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:30:33,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:30:33,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 04:30:33,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332773433] [2021-11-03 04:30:33,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-03 04:30:33,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:30:33,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-03 04:30:33,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:30:33,864 INFO L87 Difference]: Start difference. First operand 3128 states and 7097 transitions. Second operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:44,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:30:44,935 INFO L93 Difference]: Finished difference Result 6169 states and 13823 transitions. [2021-11-03 04:30:44,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-03 04:30:44,936 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:30:44,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:30:44,944 INFO L225 Difference]: With dead ends: 6169 [2021-11-03 04:30:44,945 INFO L226 Difference]: Without dead ends: 6169 [2021-11-03 04:30:44,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=527, Invalid=3379, Unknown=0, NotChecked=0, Total=3906 [2021-11-03 04:30:44,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6169 states. [2021-11-03 04:30:44,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6169 to 3124. [2021-11-03 04:30:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3124 states, 3106 states have (on average 2.2817128139085643) internal successors, (7087), 3123 states have internal predecessors, (7087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:45,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 7087 transitions. [2021-11-03 04:30:45,006 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 7087 transitions. Word has length 23 [2021-11-03 04:30:45,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:30:45,006 INFO L470 AbstractCegarLoop]: Abstraction has 3124 states and 7087 transitions. [2021-11-03 04:30:45,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:45,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 7087 transitions. [2021-11-03 04:30:45,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:30:45,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:30:45,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:30:45,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-11-03 04:30:45,008 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:30:45,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:30:45,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1245032036, now seen corresponding path program 11 times [2021-11-03 04:30:45,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:30:45,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316485561] [2021-11-03 04:30:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:30:45,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:30:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:30:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:30:45,357 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:30:45,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316485561] [2021-11-03 04:30:45,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316485561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:30:45,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:30:45,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:30:45,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774424666] [2021-11-03 04:30:45,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:30:45,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:30:45,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:30:45,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:30:45,359 INFO L87 Difference]: Start difference. First operand 3124 states and 7087 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:47,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:30:47,952 INFO L93 Difference]: Finished difference Result 3503 states and 7805 transitions. [2021-11-03 04:30:47,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 04:30:47,952 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:30:47,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:30:47,957 INFO L225 Difference]: With dead ends: 3503 [2021-11-03 04:30:47,957 INFO L226 Difference]: Without dead ends: 3503 [2021-11-03 04:30:47,957 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2021-11-03 04:30:47,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3503 states. [2021-11-03 04:30:48,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3503 to 3119. [2021-11-03 04:30:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3119 states, 3101 states have (on average 2.2815220896485005) internal successors, (7075), 3118 states have internal predecessors, (7075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 7075 transitions. [2021-11-03 04:30:48,026 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 7075 transitions. Word has length 23 [2021-11-03 04:30:48,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:30:48,026 INFO L470 AbstractCegarLoop]: Abstraction has 3119 states and 7075 transitions. [2021-11-03 04:30:48,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 7075 transitions. [2021-11-03 04:30:48,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:30:48,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:30:48,028 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:30:48,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-11-03 04:30:48,028 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:30:48,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:30:48,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1468693434, now seen corresponding path program 12 times [2021-11-03 04:30:48,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:30:48,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937732849] [2021-11-03 04:30:48,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:30:48,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:30:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:30:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:30:50,078 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:30:50,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937732849] [2021-11-03 04:30:50,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937732849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:30:50,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:30:50,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 04:30:50,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106411917] [2021-11-03 04:30:50,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:30:50,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:30:50,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:30:50,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:30:50,080 INFO L87 Difference]: Start difference. First operand 3119 states and 7075 transitions. Second operand has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:56,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:30:56,774 INFO L93 Difference]: Finished difference Result 4560 states and 10152 transitions. [2021-11-03 04:30:56,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 04:30:56,774 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:30:56,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:30:56,780 INFO L225 Difference]: With dead ends: 4560 [2021-11-03 04:30:56,780 INFO L226 Difference]: Without dead ends: 4520 [2021-11-03 04:30:56,780 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=225, Invalid=831, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 04:30:56,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2021-11-03 04:30:56,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 3123. [2021-11-03 04:30:56,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3105 states have (on average 2.2824476650563605) internal successors, (7087), 3122 states have internal predecessors, (7087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:56,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 7087 transitions. [2021-11-03 04:30:56,844 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 7087 transitions. Word has length 23 [2021-11-03 04:30:56,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:30:56,844 INFO L470 AbstractCegarLoop]: Abstraction has 3123 states and 7087 transitions. [2021-11-03 04:30:56,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:56,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 7087 transitions. [2021-11-03 04:30:56,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:30:56,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:30:56,846 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:30:56,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-11-03 04:30:56,846 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:30:56,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:30:56,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1916736768, now seen corresponding path program 13 times [2021-11-03 04:30:56,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:30:56,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929071903] [2021-11-03 04:30:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:30:56,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:30:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:30:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:30:57,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:30:57,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929071903] [2021-11-03 04:30:57,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929071903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:30:57,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:30:57,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 04:30:57,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421047170] [2021-11-03 04:30:57,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:30:57,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:30:57,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:30:57,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:30:57,463 INFO L87 Difference]: Start difference. First operand 3123 states and 7087 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:02,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:31:02,090 INFO L93 Difference]: Finished difference Result 4839 states and 10774 transitions. [2021-11-03 04:31:02,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 04:31:02,090 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:31:02,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:31:02,097 INFO L225 Difference]: With dead ends: 4839 [2021-11-03 04:31:02,097 INFO L226 Difference]: Without dead ends: 4786 [2021-11-03 04:31:02,098 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 04:31:02,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4786 states. [2021-11-03 04:31:02,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4786 to 3141. [2021-11-03 04:31:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3123 states have (on average 2.282100544348383) internal successors, (7127), 3140 states have internal predecessors, (7127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:02,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 7127 transitions. [2021-11-03 04:31:02,153 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 7127 transitions. Word has length 23 [2021-11-03 04:31:02,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:31:02,154 INFO L470 AbstractCegarLoop]: Abstraction has 3141 states and 7127 transitions. [2021-11-03 04:31:02,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:02,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 7127 transitions. [2021-11-03 04:31:02,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:31:02,155 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:31:02,155 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:31:02,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-11-03 04:31:02,156 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:31:02,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:31:02,156 INFO L85 PathProgramCache]: Analyzing trace with hash -659632652, now seen corresponding path program 14 times [2021-11-03 04:31:02,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:31:02,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979051596] [2021-11-03 04:31:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:31:02,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:31:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:31:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:31:03,372 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:31:03,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979051596] [2021-11-03 04:31:03,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979051596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:31:03,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:31:03,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 04:31:03,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854441201] [2021-11-03 04:31:03,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:31:03,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:31:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:31:03,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:31:03,373 INFO L87 Difference]: Start difference. First operand 3141 states and 7127 transitions. Second operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:08,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:31:08,834 INFO L93 Difference]: Finished difference Result 3797 states and 8414 transitions. [2021-11-03 04:31:08,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-03 04:31:08,834 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:31:08,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:31:08,842 INFO L225 Difference]: With dead ends: 3797 [2021-11-03 04:31:08,842 INFO L226 Difference]: Without dead ends: 3768 [2021-11-03 04:31:08,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2021-11-03 04:31:08,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2021-11-03 04:31:08,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3141. [2021-11-03 04:31:08,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3123 states have (on average 2.282100544348383) internal successors, (7127), 3140 states have internal predecessors, (7127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:08,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 7127 transitions. [2021-11-03 04:31:08,908 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 7127 transitions. Word has length 23 [2021-11-03 04:31:08,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:31:08,908 INFO L470 AbstractCegarLoop]: Abstraction has 3141 states and 7127 transitions. [2021-11-03 04:31:08,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:08,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 7127 transitions. [2021-11-03 04:31:08,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:31:08,910 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:31:08,910 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:31:08,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-11-03 04:31:08,910 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:31:08,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:31:08,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2002950774, now seen corresponding path program 15 times [2021-11-03 04:31:08,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:31:08,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140686908] [2021-11-03 04:31:08,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:31:08,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:31:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:31:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:31:09,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:31:09,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140686908] [2021-11-03 04:31:09,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140686908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:31:09,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:31:09,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 04:31:09,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446245982] [2021-11-03 04:31:09,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:31:09,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:31:09,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:31:09,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:31:09,424 INFO L87 Difference]: Start difference. First operand 3141 states and 7127 transitions. Second operand has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:13,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:31:13,831 INFO L93 Difference]: Finished difference Result 5031 states and 11220 transitions. [2021-11-03 04:31:13,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-03 04:31:13,831 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-03 04:31:13,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:31:13,838 INFO L225 Difference]: With dead ends: 5031 [2021-11-03 04:31:13,838 INFO L226 Difference]: Without dead ends: 4991 [2021-11-03 04:31:13,838 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=404, Invalid=2146, Unknown=0, NotChecked=0, Total=2550 [2021-11-03 04:31:13,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4991 states. [2021-11-03 04:31:13,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4991 to 3145. [2021-11-03 04:31:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3145 states, 3127 states have (on average 2.2830188679245285) internal successors, (7139), 3144 states have internal predecessors, (7139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 7139 transitions. [2021-11-03 04:31:13,899 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 7139 transitions. Word has length 23 [2021-11-03 04:31:13,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:31:13,899 INFO L470 AbstractCegarLoop]: Abstraction has 3145 states and 7139 transitions. [2021-11-03 04:31:13,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 7139 transitions. [2021-11-03 04:31:13,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:31:13,902 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:31:13,902 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:31:13,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-11-03 04:31:13,902 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 04:31:13,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:31:13,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1554907440, now seen corresponding path program 16 times [2021-11-03 04:31:13,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:31:13,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303028746] [2021-11-03 04:31:13,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:31:13,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:31:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:31:15,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:31:15,139 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:31:15,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303028746] [2021-11-03 04:31:15,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303028746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:31:15,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:31:15,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 04:31:15,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663565413] [2021-11-03 04:31:15,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-03 04:31:15,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:31:15,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-03 04:31:15,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:31:15,142 INFO L87 Difference]: Start difference. First operand 3145 states and 7139 transitions. Second operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)