./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c --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_ec47a92d-4d16-4339-ae4a-2160502b63a8/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/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_ec47a92d-4d16-4339-ae4a-2160502b63a8/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/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_ec47a92d-4d16-4339-ae4a-2160502b63a8/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 8381803db0f296b6c475c94ca7dd8f9a2c79c383b82b37638a653c8556f3f15c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:42:37,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:42:37,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:42:37,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:42:37,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:42:37,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:42:37,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:42:37,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:42:37,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:42:37,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:42:37,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:42:37,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:42:37,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:42:37,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:42:37,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:42:37,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:42:37,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:42:37,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:42:37,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:42:37,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:42:37,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:42:37,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:42:37,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:42:37,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:42:37,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:42:37,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:42:37,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:42:37,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:42:37,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:42:37,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:42:37,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:42:37,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:42:37,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:42:37,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:42:37,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:42:37,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:42:37,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:42:37,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:42:37,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:42:37,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:42:37,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:42:37,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:42:37,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:42:37,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:42:37,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:42:37,371 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:42:37,371 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:42:37,371 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:42:37,371 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:42:37,372 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:42:37,372 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:42:37,372 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:42:37,380 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:42:37,380 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:42:37,380 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:42:37,381 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:42:37,381 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:42:37,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:42:37,382 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:42:37,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:42:37,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:42:37,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:42:37,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:42:37,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:42:37,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:42:37,383 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:42:37,384 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:42:37,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:42:37,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:42:37,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:42:37,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:42:37,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:42:37,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:42:37,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:42:37,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:42:37,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:42:37,388 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:42:37,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:42:37,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:42:37,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:42:37,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:42:37,389 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8381803db0f296b6c475c94ca7dd8f9a2c79c383b82b37638a653c8556f3f15c [2021-11-03 03:42:37,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:42:37,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:42:37,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:42:37,797 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:42:37,799 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:42:37,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-03 03:42:37,880 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/bin/utaipan-aC7eJsxGYH/data/c73ba2d8c/d10c96218c434633bf6ef5e99cf267c7/FLAGd860e6249 [2021-11-03 03:42:38,794 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:42:38,795 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-03 03:42:38,832 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/bin/utaipan-aC7eJsxGYH/data/c73ba2d8c/d10c96218c434633bf6ef5e99cf267c7/FLAGd860e6249 [2021-11-03 03:42:39,316 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/bin/utaipan-aC7eJsxGYH/data/c73ba2d8c/d10c96218c434633bf6ef5e99cf267c7 [2021-11-03 03:42:39,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:42:39,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:42:39,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:42:39,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:42:39,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:42:39,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:39" (1/1) ... [2021-11-03 03:42:39,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52aaccd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:39, skipping insertion in model container [2021-11-03 03:42:39,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:39" (1/1) ... [2021-11-03 03:42:39,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:42:39,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:42:39,867 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[11561,11574] [2021-11-03 03:42:39,899 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[15618,15631] [2021-11-03 03:42:39,910 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[16839,16852] [2021-11-03 03:42:39,918 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[17545,17558] [2021-11-03 03:42:39,932 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19131,19144] [2021-11-03 03:42:39,940 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19837,19850] [2021-11-03 03:42:39,949 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20908,20921] [2021-11-03 03:42:39,970 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23398,23411] [2021-11-03 03:42:39,977 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[24107,24120] [2021-11-03 03:42:39,987 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[25144,25157] [2021-11-03 03:42:40,003 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[27082,27095] [2021-11-03 03:42:40,034 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31116,31129] [2021-11-03 03:42:40,041 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31825,31838] [2021-11-03 03:42:40,051 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[32899,32912] [2021-11-03 03:42:40,067 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[34874,34887] [2021-11-03 03:42:40,092 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[38255,38268] [2021-11-03 03:42:40,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:42:40,286 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:42:40,386 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[11561,11574] [2021-11-03 03:42:40,399 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[15618,15631] [2021-11-03 03:42:40,406 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[16839,16852] [2021-11-03 03:42:40,410 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[17545,17558] [2021-11-03 03:42:40,417 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19131,19144] [2021-11-03 03:42:40,422 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19837,19850] [2021-11-03 03:42:40,428 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20908,20921] [2021-11-03 03:42:40,439 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23398,23411] [2021-11-03 03:42:40,443 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[24107,24120] [2021-11-03 03:42:40,449 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[25144,25157] [2021-11-03 03:42:40,458 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[27082,27095] [2021-11-03 03:42:40,475 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31116,31129] [2021-11-03 03:42:40,479 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31825,31838] [2021-11-03 03:42:40,485 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[32899,32912] [2021-11-03 03:42:40,494 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[34874,34887] [2021-11-03 03:42:40,508 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_ec47a92d-4d16-4339-ae4a-2160502b63a8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[38255,38268] [2021-11-03 03:42:40,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:42:40,676 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:42:40,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40 WrapperNode [2021-11-03 03:42:40,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:42:40,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:42:40,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:42:40,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:42:40,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:42:40,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:42:40,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:42:40,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:42:40,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:42:40,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:42:40,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:42:40,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:42:40,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:42:41,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:42:41,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:42:41,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:42:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:42:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:42:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:42:41,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:42:43,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:42:43,543 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 03:42:43,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:43 BoogieIcfgContainer [2021-11-03 03:42:43,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:42:43,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:42:43,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:42:43,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:42:43,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:42:39" (1/3) ... [2021-11-03 03:42:43,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f5519a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:43, skipping insertion in model container [2021-11-03 03:42:43,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (2/3) ... [2021-11-03 03:42:43,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f5519a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:43, skipping insertion in model container [2021-11-03 03:42:43,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:43" (3/3) ... [2021-11-03 03:42:43,560 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-03 03:42:43,571 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:42:43,571 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-03 03:42:43,651 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:42:43,658 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 03:42:43,658 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-03 03:42:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 606 states, 589 states have (on average 1.8522920203735145) internal successors, (1091), 605 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:43,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 03:42:43,722 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:43,724 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:43,725 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:42:43,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:43,735 INFO L85 PathProgramCache]: Analyzing trace with hash 533676138, now seen corresponding path program 1 times [2021-11-03 03:42:43,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:43,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555102724] [2021-11-03 03:42:43,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:43,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:44,198 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 03:42:44,198 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:44,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555102724] [2021-11-03 03:42:44,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555102724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:44,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:44,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 03:42:44,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735766539] [2021-11-03 03:42:44,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:42:44,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:44,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:42:44,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:42:44,224 INFO L87 Difference]: Start difference. First operand has 606 states, 589 states have (on average 1.8522920203735145) internal successors, (1091), 605 states have internal predecessors, (1091), 0 states have call successors, (0), 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 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:44,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:44,680 INFO L93 Difference]: Finished difference Result 929 states and 1611 transitions. [2021-11-03 03:42:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:42:44,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-03 03:42:44,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:44,699 INFO L225 Difference]: With dead ends: 929 [2021-11-03 03:42:44,699 INFO L226 Difference]: Without dead ends: 488 [2021-11-03 03:42:44,705 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:42:44,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-03 03:42:44,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2021-11-03 03:42:44,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 472 states have (on average 1.2796610169491525) internal successors, (604), 487 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 604 transitions. [2021-11-03 03:42:44,785 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 604 transitions. Word has length 71 [2021-11-03 03:42:44,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:44,790 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 604 transitions. [2021-11-03 03:42:44,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:44,790 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 604 transitions. [2021-11-03 03:42:44,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 03:42:44,793 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:44,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:44,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:42:44,794 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:42:44,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:44,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1104820237, now seen corresponding path program 1 times [2021-11-03 03:42:44,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:44,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993518706] [2021-11-03 03:42:44,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:44,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:44,977 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 03:42:44,978 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:44,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993518706] [2021-11-03 03:42:44,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993518706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:44,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:44,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 03:42:44,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487748433] [2021-11-03 03:42:44,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:42:44,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:44,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:42:44,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:42:44,982 INFO L87 Difference]: Start difference. First operand 488 states and 604 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:45,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:45,344 INFO L93 Difference]: Finished difference Result 805 states and 1022 transitions. [2021-11-03 03:42:45,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:42:45,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-03 03:42:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:45,348 INFO L225 Difference]: With dead ends: 805 [2021-11-03 03:42:45,348 INFO L226 Difference]: Without dead ends: 421 [2021-11-03 03:42:45,350 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:42:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-03 03:42:45,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2021-11-03 03:42:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 405 states have (on average 1.3037037037037038) internal successors, (528), 420 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:45,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 528 transitions. [2021-11-03 03:42:45,375 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 528 transitions. Word has length 72 [2021-11-03 03:42:45,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:45,376 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 528 transitions. [2021-11-03 03:42:45,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:45,376 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 528 transitions. [2021-11-03 03:42:45,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 03:42:45,378 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:45,378 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:45,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:42:45,379 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:42:45,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:45,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1559303919, now seen corresponding path program 1 times [2021-11-03 03:42:45,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:45,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370180370] [2021-11-03 03:42:45,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:45,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:45,522 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 03:42:45,523 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:45,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370180370] [2021-11-03 03:42:45,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370180370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:45,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:45,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 03:42:45,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850358353] [2021-11-03 03:42:45,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:42:45,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:45,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:42:45,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:42:45,527 INFO L87 Difference]: Start difference. First operand 421 states and 528 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:45,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:45,902 INFO L93 Difference]: Finished difference Result 738 states and 945 transitions. [2021-11-03 03:42:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:42:45,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-03 03:42:45,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:45,905 INFO L225 Difference]: With dead ends: 738 [2021-11-03 03:42:45,906 INFO L226 Difference]: Without dead ends: 395 [2021-11-03 03:42:45,907 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:42:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-03 03:42:45,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2021-11-03 03:42:45,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.3113456464379947) internal successors, (497), 394 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:45,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 497 transitions. [2021-11-03 03:42:45,948 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 497 transitions. Word has length 73 [2021-11-03 03:42:45,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:45,949 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 497 transitions. [2021-11-03 03:42:45,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:45,949 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 497 transitions. [2021-11-03 03:42:45,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 03:42:45,951 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:45,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:45,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 03:42:45,951 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:42:45,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:45,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1409781752, now seen corresponding path program 1 times [2021-11-03 03:42:45,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:45,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017201073] [2021-11-03 03:42:45,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:45,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:46,089 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 03:42:46,089 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:46,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017201073] [2021-11-03 03:42:46,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017201073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:46,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:46,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 03:42:46,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253688787] [2021-11-03 03:42:46,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:42:46,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:46,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:42:46,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:42:46,094 INFO L87 Difference]: Start difference. First operand 395 states and 497 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:46,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:46,398 INFO L93 Difference]: Finished difference Result 712 states and 913 transitions. [2021-11-03 03:42:46,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:42:46,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-03 03:42:46,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:46,401 INFO L225 Difference]: With dead ends: 712 [2021-11-03 03:42:46,401 INFO L226 Difference]: Without dead ends: 376 [2021-11-03 03:42:46,402 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:42:46,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-03 03:42:46,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-11-03 03:42:46,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 360 states have (on average 1.3194444444444444) internal successors, (475), 375 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 475 transitions. [2021-11-03 03:42:46,422 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 475 transitions. Word has length 74 [2021-11-03 03:42:46,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:46,423 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 475 transitions. [2021-11-03 03:42:46,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 475 transitions. [2021-11-03 03:42:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 03:42:46,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:46,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:46,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 03:42:46,425 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:42:46,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:46,426 INFO L85 PathProgramCache]: Analyzing trace with hash 254667180, now seen corresponding path program 1 times [2021-11-03 03:42:46,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:46,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185470105] [2021-11-03 03:42:46,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:46,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:46,519 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 03:42:46,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:46,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185470105] [2021-11-03 03:42:46,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185470105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:46,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:46,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 03:42:46,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978221393] [2021-11-03 03:42:46,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:42:46,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:46,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:42:46,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:42:46,523 INFO L87 Difference]: Start difference. First operand 376 states and 475 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:46,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:46,881 INFO L93 Difference]: Finished difference Result 693 states and 890 transitions. [2021-11-03 03:42:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:42:46,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-03 03:42:46,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:46,886 INFO L225 Difference]: With dead ends: 693 [2021-11-03 03:42:46,887 INFO L226 Difference]: Without dead ends: 371 [2021-11-03 03:42:46,888 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:42:46,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-03 03:42:46,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-11-03 03:42:46,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.3183098591549296) internal successors, (468), 370 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:46,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 468 transitions. [2021-11-03 03:42:46,926 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 468 transitions. Word has length 75 [2021-11-03 03:42:46,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:46,927 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 468 transitions. [2021-11-03 03:42:46,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:46,928 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 468 transitions. [2021-11-03 03:42:46,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 03:42:46,930 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:46,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:46,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 03:42:46,931 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:42:46,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:46,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1435179207, now seen corresponding path program 1 times [2021-11-03 03:42:46,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:46,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540583532] [2021-11-03 03:42:46,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:46,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:47,148 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 03:42:47,149 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:47,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540583532] [2021-11-03 03:42:47,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540583532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:47,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:47,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:42:47,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796523629] [2021-11-03 03:42:47,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:42:47,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:47,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:42:47,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:42:47,154 INFO L87 Difference]: Start difference. First operand 371 states and 468 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:48,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:48,295 INFO L93 Difference]: Finished difference Result 721 states and 916 transitions. [2021-11-03 03:42:48,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:42:48,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-03 03:42:48,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:48,300 INFO L225 Difference]: With dead ends: 721 [2021-11-03 03:42:48,301 INFO L226 Difference]: Without dead ends: 652 [2021-11-03 03:42:48,301 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:42:48,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-03 03:42:48,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 371. [2021-11-03 03:42:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.315492957746479) internal successors, (467), 370 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 467 transitions. [2021-11-03 03:42:48,330 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 467 transitions. Word has length 76 [2021-11-03 03:42:48,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:48,331 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 467 transitions. [2021-11-03 03:42:48,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:48,332 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 467 transitions. [2021-11-03 03:42:48,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 03:42:48,333 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:48,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:48,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 03:42:48,334 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:42:48,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:48,335 INFO L85 PathProgramCache]: Analyzing trace with hash 980279151, now seen corresponding path program 1 times [2021-11-03 03:42:48,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:48,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122611137] [2021-11-03 03:42:48,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:48,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:48,486 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 03:42:48,487 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:48,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122611137] [2021-11-03 03:42:48,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122611137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:48,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:48,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:42:48,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739701129] [2021-11-03 03:42:48,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:42:48,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:48,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:42:48,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:42:48,491 INFO L87 Difference]: Start difference. First operand 371 states and 467 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:49,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:49,565 INFO L93 Difference]: Finished difference Result 764 states and 970 transitions. [2021-11-03 03:42:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:42:49,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-03 03:42:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:49,569 INFO L225 Difference]: With dead ends: 764 [2021-11-03 03:42:49,570 INFO L226 Difference]: Without dead ends: 656 [2021-11-03 03:42:49,571 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:42:49,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-03 03:42:49,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 371. [2021-11-03 03:42:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.3126760563380282) internal successors, (466), 370 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:49,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 466 transitions. [2021-11-03 03:42:49,604 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 466 transitions. Word has length 76 [2021-11-03 03:42:49,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:49,604 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 466 transitions. [2021-11-03 03:42:49,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:49,605 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 466 transitions. [2021-11-03 03:42:49,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 03:42:49,606 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:49,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:49,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 03:42:49,607 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:42:49,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:49,607 INFO L85 PathProgramCache]: Analyzing trace with hash -612595194, now seen corresponding path program 1 times [2021-11-03 03:42:49,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:49,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785426499] [2021-11-03 03:42:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:49,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:49,784 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 03:42:49,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:49,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785426499] [2021-11-03 03:42:49,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785426499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:49,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:49,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 03:42:49,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468949872] [2021-11-03 03:42:49,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:42:49,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:49,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:42:49,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:42:49,790 INFO L87 Difference]: Start difference. First operand 371 states and 466 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:50,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:50,465 INFO L93 Difference]: Finished difference Result 696 states and 848 transitions. [2021-11-03 03:42:50,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 03:42:50,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-03 03:42:50,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:50,473 INFO L225 Difference]: With dead ends: 696 [2021-11-03 03:42:50,473 INFO L226 Difference]: Without dead ends: 504 [2021-11-03 03:42:50,475 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:42:50,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-11-03 03:42:50,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 371. [2021-11-03 03:42:50,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.3098591549295775) internal successors, (465), 370 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:50,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 465 transitions. [2021-11-03 03:42:50,508 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 465 transitions. Word has length 76 [2021-11-03 03:42:50,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:50,510 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 465 transitions. [2021-11-03 03:42:50,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:50,511 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 465 transitions. [2021-11-03 03:42:50,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 03:42:50,512 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:50,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:50,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 03:42:50,513 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:42:50,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:50,513 INFO L85 PathProgramCache]: Analyzing trace with hash -988049107, now seen corresponding path program 1 times [2021-11-03 03:42:50,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:50,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540309730] [2021-11-03 03:42:50,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:50,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:50,808 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 03:42:50,809 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:50,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540309730] [2021-11-03 03:42:50,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540309730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:50,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:50,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 03:42:50,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263737373] [2021-11-03 03:42:50,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:42:50,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:50,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:42:50,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:42:50,814 INFO L87 Difference]: Start difference. First operand 371 states and 465 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:53,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:53,105 INFO L93 Difference]: Finished difference Result 1046 states and 1334 transitions. [2021-11-03 03:42:53,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 03:42:53,106 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-03 03:42:53,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:53,112 INFO L225 Difference]: With dead ends: 1046 [2021-11-03 03:42:53,113 INFO L226 Difference]: Without dead ends: 968 [2021-11-03 03:42:53,114 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 03:42:53,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-11-03 03:42:53,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 375. [2021-11-03 03:42:53,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.3064066852367688) internal successors, (469), 374 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:53,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 469 transitions. [2021-11-03 03:42:53,163 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 469 transitions. Word has length 78 [2021-11-03 03:42:53,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:53,164 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 469 transitions. [2021-11-03 03:42:53,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 469 transitions. [2021-11-03 03:42:53,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 03:42:53,166 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:53,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:53,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 03:42:53,167 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:42:53,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:53,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1396894335, now seen corresponding path program 1 times [2021-11-03 03:42:53,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:53,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891528236] [2021-11-03 03:42:53,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:53,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:53,337 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 03:42:53,338 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:53,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891528236] [2021-11-03 03:42:53,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891528236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:53,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:53,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:42:53,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211952184] [2021-11-03 03:42:53,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:42:53,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:53,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:42:53,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:42:53,341 INFO L87 Difference]: Start difference. First operand 375 states and 469 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:54,317 INFO L93 Difference]: Finished difference Result 704 states and 882 transitions. [2021-11-03 03:42:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:42:54,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-03 03:42:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:54,322 INFO L225 Difference]: With dead ends: 704 [2021-11-03 03:42:54,323 INFO L226 Difference]: Without dead ends: 648 [2021-11-03 03:42:54,323 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-03 03:42:54,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-11-03 03:42:54,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 375. [2021-11-03 03:42:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.3036211699164346) internal successors, (468), 374 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:54,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 468 transitions. [2021-11-03 03:42:54,365 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 468 transitions. Word has length 78 [2021-11-03 03:42:54,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:54,366 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 468 transitions. [2021-11-03 03:42:54,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:54,366 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 468 transitions. [2021-11-03 03:42:54,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 03:42:54,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:54,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:54,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 03:42:54,368 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:42:54,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:54,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1028792160, now seen corresponding path program 1 times [2021-11-03 03:42:54,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:54,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812370994] [2021-11-03 03:42:54,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:54,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:54,639 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 03:42:54,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:54,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812370994] [2021-11-03 03:42:54,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812370994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:54,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:54,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 03:42:54,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639391034] [2021-11-03 03:42:54,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:42:54,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:54,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:42:54,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:42:54,642 INFO L87 Difference]: Start difference. First operand 375 states and 468 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:56,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:56,745 INFO L93 Difference]: Finished difference Result 973 states and 1231 transitions. [2021-11-03 03:42:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 03:42:56,746 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-03 03:42:56,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:56,751 INFO L225 Difference]: With dead ends: 973 [2021-11-03 03:42:56,752 INFO L226 Difference]: Without dead ends: 917 [2021-11-03 03:42:56,753 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 03:42:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2021-11-03 03:42:56,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 379. [2021-11-03 03:42:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 363 states have (on average 1.300275482093664) internal successors, (472), 378 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 472 transitions. [2021-11-03 03:42:56,806 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 472 transitions. Word has length 78 [2021-11-03 03:42:56,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:56,807 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 472 transitions. [2021-11-03 03:42:56,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:56,807 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 472 transitions. [2021-11-03 03:42:56,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 03:42:56,812 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:56,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:56,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 03:42:56,813 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:42:56,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:56,814 INFO L85 PathProgramCache]: Analyzing trace with hash -391975036, now seen corresponding path program 1 times [2021-11-03 03:42:56,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:56,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146519272] [2021-11-03 03:42:56,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:56,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:56,952 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 03:42:56,952 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:56,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146519272] [2021-11-03 03:42:56,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146519272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:56,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:56,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:42:56,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520893079] [2021-11-03 03:42:56,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:42:56,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:56,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:42:56,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:42:56,954 INFO L87 Difference]: Start difference. First operand 379 states and 472 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:57,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:57,758 INFO L93 Difference]: Finished difference Result 700 states and 876 transitions. [2021-11-03 03:42:57,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:42:57,759 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-03 03:42:57,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:57,762 INFO L225 Difference]: With dead ends: 700 [2021-11-03 03:42:57,763 INFO L226 Difference]: Without dead ends: 648 [2021-11-03 03:42:57,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-03 03:42:57,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-11-03 03:42:57,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 379. [2021-11-03 03:42:57,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 363 states have (on average 1.2975206611570247) internal successors, (471), 378 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:57,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 471 transitions. [2021-11-03 03:42:57,813 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 471 transitions. Word has length 78 [2021-11-03 03:42:57,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:57,813 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 471 transitions. [2021-11-03 03:42:57,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:57,814 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 471 transitions. [2021-11-03 03:42:57,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 03:42:57,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:57,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:57,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 03:42:57,816 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:42:57,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:57,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1002682727, now seen corresponding path program 1 times [2021-11-03 03:42:57,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:57,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936157891] [2021-11-03 03:42:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:57,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:57,943 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 03:42:57,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:57,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936157891] [2021-11-03 03:42:57,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936157891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:57,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:57,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:42:57,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908947831] [2021-11-03 03:42:57,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:42:57,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:57,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:42:57,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:42:57,946 INFO L87 Difference]: Start difference. First operand 379 states and 471 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:58,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:58,861 INFO L93 Difference]: Finished difference Result 787 states and 987 transitions. [2021-11-03 03:42:58,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:42:58,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-03 03:42:58,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:58,865 INFO L225 Difference]: With dead ends: 787 [2021-11-03 03:42:58,865 INFO L226 Difference]: Without dead ends: 664 [2021-11-03 03:42:58,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 03:42:58,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-11-03 03:42:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 379. [2021-11-03 03:42:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 363 states have (on average 1.2947658402203857) internal successors, (470), 378 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 470 transitions. [2021-11-03 03:42:58,910 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 470 transitions. Word has length 78 [2021-11-03 03:42:58,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:58,910 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 470 transitions. [2021-11-03 03:42:58,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:58,910 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 470 transitions. [2021-11-03 03:42:58,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 03:42:58,912 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:58,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:58,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 03:42:58,912 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:42:58,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:58,913 INFO L85 PathProgramCache]: Analyzing trace with hash 423246883, now seen corresponding path program 1 times [2021-11-03 03:42:58,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:58,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94619034] [2021-11-03 03:42:58,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:58,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:59,020 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 03:42:59,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:59,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94619034] [2021-11-03 03:42:59,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94619034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:59,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:59,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:42:59,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861064253] [2021-11-03 03:42:59,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:42:59,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:59,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:42:59,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:42:59,023 INFO L87 Difference]: Start difference. First operand 379 states and 470 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:59,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:59,816 INFO L93 Difference]: Finished difference Result 704 states and 877 transitions. [2021-11-03 03:42:59,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:42:59,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-03 03:42:59,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:59,820 INFO L225 Difference]: With dead ends: 704 [2021-11-03 03:42:59,820 INFO L226 Difference]: Without dead ends: 648 [2021-11-03 03:42:59,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-03 03:42:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-11-03 03:42:59,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 379. [2021-11-03 03:42:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 363 states have (on average 1.2920110192837466) internal successors, (469), 378 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 469 transitions. [2021-11-03 03:42:59,875 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 469 transitions. Word has length 78 [2021-11-03 03:42:59,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:59,876 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 469 transitions. [2021-11-03 03:42:59,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:59,876 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 469 transitions. [2021-11-03 03:42:59,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 03:42:59,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:59,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:59,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 03:42:59,878 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:42:59,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:59,879 INFO L85 PathProgramCache]: Analyzing trace with hash 832092111, now seen corresponding path program 1 times [2021-11-03 03:42:59,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:59,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534056489] [2021-11-03 03:42:59,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:59,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:59,999 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 03:42:59,999 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:59,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534056489] [2021-11-03 03:43:00,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534056489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:00,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:00,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:00,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563553113] [2021-11-03 03:43:00,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:00,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:00,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:00,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:00,002 INFO L87 Difference]: Start difference. First operand 379 states and 469 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:00,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:00,896 INFO L93 Difference]: Finished difference Result 734 states and 918 transitions. [2021-11-03 03:43:00,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:43:00,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-03 03:43:00,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:00,900 INFO L225 Difference]: With dead ends: 734 [2021-11-03 03:43:00,900 INFO L226 Difference]: Without dead ends: 656 [2021-11-03 03:43:00,901 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:43:00,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-03 03:43:00,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 379. [2021-11-03 03:43:00,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 363 states have (on average 1.2892561983471074) internal successors, (468), 378 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:00,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 468 transitions. [2021-11-03 03:43:00,937 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 468 transitions. Word has length 78 [2021-11-03 03:43:00,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:00,938 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 468 transitions. [2021-11-03 03:43:00,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:00,938 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 468 transitions. [2021-11-03 03:43:00,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 03:43:00,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:00,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:00,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 03:43:00,940 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:00,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:00,941 INFO L85 PathProgramCache]: Analyzing trace with hash -508022715, now seen corresponding path program 1 times [2021-11-03 03:43:00,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:00,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115797195] [2021-11-03 03:43:00,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:00,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:01,039 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 03:43:01,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:01,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115797195] [2021-11-03 03:43:01,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115797195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:01,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:01,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:01,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800853399] [2021-11-03 03:43:01,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:01,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:01,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:01,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:01,042 INFO L87 Difference]: Start difference. First operand 379 states and 468 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:02,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:02,094 INFO L93 Difference]: Finished difference Result 734 states and 919 transitions. [2021-11-03 03:43:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:43:02,095 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-11-03 03:43:02,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:02,098 INFO L225 Difference]: With dead ends: 734 [2021-11-03 03:43:02,099 INFO L226 Difference]: Without dead ends: 656 [2021-11-03 03:43:02,099 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 03:43:02,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-03 03:43:02,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 375. [2021-11-03 03:43:02,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.2896935933147633) internal successors, (463), 374 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 463 transitions. [2021-11-03 03:43:02,160 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 463 transitions. Word has length 79 [2021-11-03 03:43:02,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:02,161 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 463 transitions. [2021-11-03 03:43:02,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:02,161 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 463 transitions. [2021-11-03 03:43:02,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 03:43:02,163 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:02,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:02,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 03:43:02,163 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:02,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:02,163 INFO L85 PathProgramCache]: Analyzing trace with hash -931365883, now seen corresponding path program 1 times [2021-11-03 03:43:02,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:02,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439795902] [2021-11-03 03:43:02,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:02,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:02,266 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 03:43:02,267 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:02,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439795902] [2021-11-03 03:43:02,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439795902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:02,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:02,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:02,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011987131] [2021-11-03 03:43:02,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:02,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:02,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:02,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:02,269 INFO L87 Difference]: Start difference. First operand 375 states and 463 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:03,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:03,265 INFO L93 Difference]: Finished difference Result 700 states and 870 transitions. [2021-11-03 03:43:03,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:43:03,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-11-03 03:43:03,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:03,269 INFO L225 Difference]: With dead ends: 700 [2021-11-03 03:43:03,269 INFO L226 Difference]: Without dead ends: 644 [2021-11-03 03:43:03,270 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 03:43:03,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-11-03 03:43:03,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 371. [2021-11-03 03:43:03,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.2901408450704226) internal successors, (458), 370 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 458 transitions. [2021-11-03 03:43:03,316 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 458 transitions. Word has length 79 [2021-11-03 03:43:03,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:03,316 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 458 transitions. [2021-11-03 03:43:03,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:03,316 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 458 transitions. [2021-11-03 03:43:03,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 03:43:03,318 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:03,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:03,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 03:43:03,318 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:03,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:03,319 INFO L85 PathProgramCache]: Analyzing trace with hash 380495892, now seen corresponding path program 1 times [2021-11-03 03:43:03,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:03,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596207263] [2021-11-03 03:43:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:03,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:03,439 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 03:43:03,439 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:03,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596207263] [2021-11-03 03:43:03,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596207263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:03,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:03,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:03,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870445047] [2021-11-03 03:43:03,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:03,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:03,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:03,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:03,445 INFO L87 Difference]: Start difference. First operand 371 states and 458 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:04,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:04,350 INFO L93 Difference]: Finished difference Result 677 states and 833 transitions. [2021-11-03 03:43:04,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:43:04,350 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 03:43:04,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:04,354 INFO L225 Difference]: With dead ends: 677 [2021-11-03 03:43:04,354 INFO L226 Difference]: Without dead ends: 628 [2021-11-03 03:43:04,355 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:43:04,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-03 03:43:04,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 371. [2021-11-03 03:43:04,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.287323943661972) internal successors, (457), 370 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:04,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 457 transitions. [2021-11-03 03:43:04,412 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 457 transitions. Word has length 80 [2021-11-03 03:43:04,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:04,413 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 457 transitions. [2021-11-03 03:43:04,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:04,413 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 457 transitions. [2021-11-03 03:43:04,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 03:43:04,415 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:04,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:04,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 03:43:04,415 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:04,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:04,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2002274302, now seen corresponding path program 1 times [2021-11-03 03:43:04,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:04,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548342243] [2021-11-03 03:43:04,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:04,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:04,605 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 03:43:04,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:04,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548342243] [2021-11-03 03:43:04,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548342243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:04,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:04,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 03:43:04,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207759366] [2021-11-03 03:43:04,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:43:04,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:04,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:43:04,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:43:04,609 INFO L87 Difference]: Start difference. First operand 371 states and 457 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:06,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:06,593 INFO L93 Difference]: Finished difference Result 973 states and 1219 transitions. [2021-11-03 03:43:06,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 03:43:06,594 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 03:43:06,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:06,597 INFO L225 Difference]: With dead ends: 973 [2021-11-03 03:43:06,598 INFO L226 Difference]: Without dead ends: 912 [2021-11-03 03:43:06,599 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 03:43:06,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-11-03 03:43:06,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 375. [2021-11-03 03:43:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.2841225626740946) internal successors, (461), 374 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:06,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 461 transitions. [2021-11-03 03:43:06,670 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 461 transitions. Word has length 80 [2021-11-03 03:43:06,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:06,670 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 461 transitions. [2021-11-03 03:43:06,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:06,671 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 461 transitions. [2021-11-03 03:43:06,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 03:43:06,672 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:06,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:06,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 03:43:06,673 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:06,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:06,674 INFO L85 PathProgramCache]: Analyzing trace with hash 891103228, now seen corresponding path program 1 times [2021-11-03 03:43:06,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:06,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919057197] [2021-11-03 03:43:06,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:06,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:06,801 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 03:43:06,801 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:06,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919057197] [2021-11-03 03:43:06,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919057197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:06,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:06,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:06,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547556309] [2021-11-03 03:43:06,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:06,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:06,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:06,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:06,804 INFO L87 Difference]: Start difference. First operand 375 states and 461 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:07,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:07,940 INFO L93 Difference]: Finished difference Result 678 states and 833 transitions. [2021-11-03 03:43:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:43:07,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 03:43:07,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:07,945 INFO L225 Difference]: With dead ends: 678 [2021-11-03 03:43:07,945 INFO L226 Difference]: Without dead ends: 632 [2021-11-03 03:43:07,946 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:43:07,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-03 03:43:08,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 375. [2021-11-03 03:43:08,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.2813370473537604) internal successors, (460), 374 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 460 transitions. [2021-11-03 03:43:08,014 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 460 transitions. Word has length 80 [2021-11-03 03:43:08,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:08,015 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 460 transitions. [2021-11-03 03:43:08,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 460 transitions. [2021-11-03 03:43:08,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 03:43:08,016 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:08,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:08,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 03:43:08,017 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:08,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:08,018 INFO L85 PathProgramCache]: Analyzing trace with hash -374640683, now seen corresponding path program 1 times [2021-11-03 03:43:08,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:08,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261135038] [2021-11-03 03:43:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:08,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:08,228 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 03:43:08,228 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:08,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261135038] [2021-11-03 03:43:08,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261135038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:08,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:08,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 03:43:08,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508219445] [2021-11-03 03:43:08,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:43:08,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:08,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:43:08,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:43:08,230 INFO L87 Difference]: Start difference. First operand 375 states and 460 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:09,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:09,980 INFO L93 Difference]: Finished difference Result 913 states and 1136 transitions. [2021-11-03 03:43:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 03:43:09,981 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 03:43:09,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:09,984 INFO L225 Difference]: With dead ends: 913 [2021-11-03 03:43:09,984 INFO L226 Difference]: Without dead ends: 864 [2021-11-03 03:43:09,985 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 03:43:09,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-11-03 03:43:10,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 379. [2021-11-03 03:43:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 363 states have (on average 1.278236914600551) internal successors, (464), 378 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 464 transitions. [2021-11-03 03:43:10,054 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 464 transitions. Word has length 80 [2021-11-03 03:43:10,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:10,054 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 464 transitions. [2021-11-03 03:43:10,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:10,055 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 464 transitions. [2021-11-03 03:43:10,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 03:43:10,056 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:10,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:10,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 03:43:10,057 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:10,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:10,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1845105563, now seen corresponding path program 1 times [2021-11-03 03:43:10,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:10,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107690341] [2021-11-03 03:43:10,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:10,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:10,167 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 03:43:10,167 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:10,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107690341] [2021-11-03 03:43:10,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107690341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:10,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:10,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:10,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912778206] [2021-11-03 03:43:10,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:10,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:10,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:10,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:10,169 INFO L87 Difference]: Start difference. First operand 379 states and 464 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:11,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:11,204 INFO L93 Difference]: Finished difference Result 678 states and 831 transitions. [2021-11-03 03:43:11,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:43:11,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 03:43:11,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:11,222 INFO L225 Difference]: With dead ends: 678 [2021-11-03 03:43:11,223 INFO L226 Difference]: Without dead ends: 632 [2021-11-03 03:43:11,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:43:11,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-03 03:43:11,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 379. [2021-11-03 03:43:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 363 states have (on average 1.2754820936639117) internal successors, (463), 378 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 463 transitions. [2021-11-03 03:43:11,304 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 463 transitions. Word has length 80 [2021-11-03 03:43:11,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:11,304 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 463 transitions. [2021-11-03 03:43:11,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 463 transitions. [2021-11-03 03:43:11,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 03:43:11,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:11,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:11,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 03:43:11,307 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:11,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:11,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1184234996, now seen corresponding path program 1 times [2021-11-03 03:43:11,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:11,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892621653] [2021-11-03 03:43:11,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:11,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:11,517 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 03:43:11,517 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:11,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892621653] [2021-11-03 03:43:11,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892621653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:11,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:11,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 03:43:11,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427020634] [2021-11-03 03:43:11,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:43:11,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:11,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:43:11,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:43:11,521 INFO L87 Difference]: Start difference. First operand 379 states and 463 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:13,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:13,303 INFO L93 Difference]: Finished difference Result 869 states and 1075 transitions. [2021-11-03 03:43:13,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 03:43:13,304 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 03:43:13,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:13,308 INFO L225 Difference]: With dead ends: 869 [2021-11-03 03:43:13,309 INFO L226 Difference]: Without dead ends: 864 [2021-11-03 03:43:13,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 03:43:13,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-11-03 03:43:13,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 383. [2021-11-03 03:43:13,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 367 states have (on average 1.2724795640326976) internal successors, (467), 382 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:13,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 467 transitions. [2021-11-03 03:43:13,380 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 467 transitions. Word has length 80 [2021-11-03 03:43:13,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:13,380 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 467 transitions. [2021-11-03 03:43:13,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:13,381 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 467 transitions. [2021-11-03 03:43:13,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 03:43:13,382 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:13,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:13,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 03:43:13,383 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:13,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:13,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1196411487, now seen corresponding path program 1 times [2021-11-03 03:43:13,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:13,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120010480] [2021-11-03 03:43:13,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:13,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:13,560 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 03:43:13,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:13,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120010480] [2021-11-03 03:43:13,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120010480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:13,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:13,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 03:43:13,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560217108] [2021-11-03 03:43:13,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:43:13,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:43:13,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:43:13,562 INFO L87 Difference]: Start difference. First operand 383 states and 467 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:15,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:15,371 INFO L93 Difference]: Finished difference Result 913 states and 1136 transitions. [2021-11-03 03:43:15,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 03:43:15,372 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 03:43:15,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:15,376 INFO L225 Difference]: With dead ends: 913 [2021-11-03 03:43:15,376 INFO L226 Difference]: Without dead ends: 867 [2021-11-03 03:43:15,377 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 03:43:15,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-11-03 03:43:15,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 387. [2021-11-03 03:43:15,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 371 states have (on average 1.2695417789757413) internal successors, (471), 386 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:15,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 471 transitions. [2021-11-03 03:43:15,485 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 471 transitions. Word has length 80 [2021-11-03 03:43:15,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:15,486 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 471 transitions. [2021-11-03 03:43:15,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 471 transitions. [2021-11-03 03:43:15,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 03:43:15,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:15,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:15,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 03:43:15,489 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:15,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:15,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1992159898, now seen corresponding path program 1 times [2021-11-03 03:43:15,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:15,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928790085] [2021-11-03 03:43:15,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:15,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:15,609 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 03:43:15,609 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:15,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928790085] [2021-11-03 03:43:15,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928790085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:15,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:15,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:15,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602464083] [2021-11-03 03:43:15,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:15,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:15,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:15,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:15,612 INFO L87 Difference]: Start difference. First operand 387 states and 471 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:16,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:16,503 INFO L93 Difference]: Finished difference Result 676 states and 826 transitions. [2021-11-03 03:43:16,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:43:16,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 03:43:16,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:16,506 INFO L225 Difference]: With dead ends: 676 [2021-11-03 03:43:16,506 INFO L226 Difference]: Without dead ends: 632 [2021-11-03 03:43:16,506 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:43:16,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-03 03:43:16,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 387. [2021-11-03 03:43:16,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 371 states have (on average 1.266846361185984) internal successors, (470), 386 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:16,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 470 transitions. [2021-11-03 03:43:16,594 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 470 transitions. Word has length 80 [2021-11-03 03:43:16,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:16,595 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 470 transitions. [2021-11-03 03:43:16,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:16,595 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 470 transitions. [2021-11-03 03:43:16,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 03:43:16,596 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:16,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:16,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 03:43:16,597 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:16,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:16,598 INFO L85 PathProgramCache]: Analyzing trace with hash -144938974, now seen corresponding path program 1 times [2021-11-03 03:43:16,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:16,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25118734] [2021-11-03 03:43:16,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:16,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:16,741 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 03:43:16,741 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:16,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25118734] [2021-11-03 03:43:16,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25118734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:16,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:16,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:16,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789562995] [2021-11-03 03:43:16,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:16,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:16,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:16,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:16,745 INFO L87 Difference]: Start difference. First operand 387 states and 470 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:17,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:17,591 INFO L93 Difference]: Finished difference Result 721 states and 883 transitions. [2021-11-03 03:43:17,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:43:17,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 03:43:17,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:17,594 INFO L225 Difference]: With dead ends: 721 [2021-11-03 03:43:17,594 INFO L226 Difference]: Without dead ends: 660 [2021-11-03 03:43:17,595 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-03 03:43:17,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-03 03:43:17,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 387. [2021-11-03 03:43:17,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 371 states have (on average 1.2641509433962264) internal successors, (469), 386 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:17,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 469 transitions. [2021-11-03 03:43:17,673 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 469 transitions. Word has length 80 [2021-11-03 03:43:17,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:17,673 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 469 transitions. [2021-11-03 03:43:17,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:17,674 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 469 transitions. [2021-11-03 03:43:17,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 03:43:17,675 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:17,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:17,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-03 03:43:17,675 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:17,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2057136076, now seen corresponding path program 1 times [2021-11-03 03:43:17,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:17,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35450629] [2021-11-03 03:43:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:17,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:17,780 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 03:43:17,781 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:17,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35450629] [2021-11-03 03:43:17,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35450629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:17,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:17,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:17,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398664760] [2021-11-03 03:43:17,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:17,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:17,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:17,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:17,783 INFO L87 Difference]: Start difference. First operand 387 states and 469 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:18,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:18,717 INFO L93 Difference]: Finished difference Result 681 states and 829 transitions. [2021-11-03 03:43:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:43:18,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 03:43:18,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:18,721 INFO L225 Difference]: With dead ends: 681 [2021-11-03 03:43:18,721 INFO L226 Difference]: Without dead ends: 632 [2021-11-03 03:43:18,721 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:43:18,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-03 03:43:18,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 387. [2021-11-03 03:43:18,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 371 states have (on average 1.261455525606469) internal successors, (468), 386 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:18,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 468 transitions. [2021-11-03 03:43:18,812 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 468 transitions. Word has length 80 [2021-11-03 03:43:18,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:18,813 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 468 transitions. [2021-11-03 03:43:18,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:18,813 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 468 transitions. [2021-11-03 03:43:18,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 03:43:18,814 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:18,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:18,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 03:43:18,815 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:18,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:18,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2041843904, now seen corresponding path program 1 times [2021-11-03 03:43:18,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:18,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802944999] [2021-11-03 03:43:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:18,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:18,991 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 03:43:18,991 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:18,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802944999] [2021-11-03 03:43:18,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802944999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:18,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:18,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 03:43:18,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015481999] [2021-11-03 03:43:18,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:43:18,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:18,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:43:18,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:43:18,994 INFO L87 Difference]: Start difference. First operand 387 states and 468 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:20,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:20,886 INFO L93 Difference]: Finished difference Result 1075 states and 1339 transitions. [2021-11-03 03:43:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 03:43:20,886 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 03:43:20,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:20,890 INFO L225 Difference]: With dead ends: 1075 [2021-11-03 03:43:20,890 INFO L226 Difference]: Without dead ends: 991 [2021-11-03 03:43:20,891 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 03:43:20,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2021-11-03 03:43:20,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 391. [2021-11-03 03:43:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 375 states have (on average 1.2586666666666666) internal successors, (472), 390 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 472 transitions. [2021-11-03 03:43:20,958 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 472 transitions. Word has length 80 [2021-11-03 03:43:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:20,958 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 472 transitions. [2021-11-03 03:43:20,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:20,959 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 472 transitions. [2021-11-03 03:43:20,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 03:43:20,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:20,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:20,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 03:43:20,961 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:20,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:20,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1484508438, now seen corresponding path program 1 times [2021-11-03 03:43:20,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:20,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342213006] [2021-11-03 03:43:20,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:20,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:21,064 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 03:43:21,064 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:21,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342213006] [2021-11-03 03:43:21,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342213006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:21,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:21,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:21,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684294519] [2021-11-03 03:43:21,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:21,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:21,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:21,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:21,066 INFO L87 Difference]: Start difference. First operand 391 states and 472 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:21,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:21,966 INFO L93 Difference]: Finished difference Result 641 states and 774 transitions. [2021-11-03 03:43:21,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:43:21,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 03:43:21,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:21,969 INFO L225 Difference]: With dead ends: 641 [2021-11-03 03:43:21,969 INFO L226 Difference]: Without dead ends: 636 [2021-11-03 03:43:21,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:43:21,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-11-03 03:43:22,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 391. [2021-11-03 03:43:22,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 375 states have (on average 1.256) internal successors, (471), 390 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:22,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 471 transitions. [2021-11-03 03:43:22,032 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 471 transitions. Word has length 80 [2021-11-03 03:43:22,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:22,032 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 471 transitions. [2021-11-03 03:43:22,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:22,033 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 471 transitions. [2021-11-03 03:43:22,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 03:43:22,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:22,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:22,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 03:43:22,035 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:22,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:22,035 INFO L85 PathProgramCache]: Analyzing trace with hash -898261756, now seen corresponding path program 1 times [2021-11-03 03:43:22,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:22,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672520465] [2021-11-03 03:43:22,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:22,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:22,212 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 03:43:22,213 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:22,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672520465] [2021-11-03 03:43:22,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672520465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:22,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:22,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 03:43:22,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021121810] [2021-11-03 03:43:22,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:43:22,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:22,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:43:22,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:43:22,214 INFO L87 Difference]: Start difference. First operand 391 states and 471 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:24,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:24,148 INFO L93 Difference]: Finished difference Result 949 states and 1171 transitions. [2021-11-03 03:43:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 03:43:24,149 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 03:43:24,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:24,152 INFO L225 Difference]: With dead ends: 949 [2021-11-03 03:43:24,152 INFO L226 Difference]: Without dead ends: 932 [2021-11-03 03:43:24,153 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 03:43:24,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-11-03 03:43:24,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 395. [2021-11-03 03:43:24,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.2532981530343008) internal successors, (475), 394 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 475 transitions. [2021-11-03 03:43:24,243 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 475 transitions. Word has length 80 [2021-11-03 03:43:24,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:24,243 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 475 transitions. [2021-11-03 03:43:24,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:24,244 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 475 transitions. [2021-11-03 03:43:24,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 03:43:24,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:24,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:24,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 03:43:24,246 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:24,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:24,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1995378919, now seen corresponding path program 1 times [2021-11-03 03:43:24,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:24,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442368131] [2021-11-03 03:43:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:24,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:24,348 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 03:43:24,348 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:24,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442368131] [2021-11-03 03:43:24,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442368131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:24,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:24,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:24,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850353847] [2021-11-03 03:43:24,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:24,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:24,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:24,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:24,350 INFO L87 Difference]: Start difference. First operand 395 states and 475 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:25,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:25,306 INFO L93 Difference]: Finished difference Result 686 states and 832 transitions. [2021-11-03 03:43:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:43:25,306 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 03:43:25,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:25,309 INFO L225 Difference]: With dead ends: 686 [2021-11-03 03:43:25,309 INFO L226 Difference]: Without dead ends: 640 [2021-11-03 03:43:25,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:43:25,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-11-03 03:43:25,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 395. [2021-11-03 03:43:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.2506596306068603) internal successors, (474), 394 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 474 transitions. [2021-11-03 03:43:25,392 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 474 transitions. Word has length 80 [2021-11-03 03:43:25,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:25,393 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 474 transitions. [2021-11-03 03:43:25,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:25,393 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 474 transitions. [2021-11-03 03:43:25,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 03:43:25,394 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:25,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:25,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-03 03:43:25,395 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:25,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:25,396 INFO L85 PathProgramCache]: Analyzing trace with hash 729371863, now seen corresponding path program 1 times [2021-11-03 03:43:25,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:25,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546052860] [2021-11-03 03:43:25,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:25,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:25,585 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 03:43:25,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:25,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546052860] [2021-11-03 03:43:25,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546052860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:25,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:25,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 03:43:25,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139680068] [2021-11-03 03:43:25,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:43:25,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:25,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:43:25,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:43:25,587 INFO L87 Difference]: Start difference. First operand 395 states and 474 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:27,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:27,557 INFO L93 Difference]: Finished difference Result 877 states and 1076 transitions. [2021-11-03 03:43:27,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 03:43:27,557 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 03:43:27,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:27,560 INFO L225 Difference]: With dead ends: 877 [2021-11-03 03:43:27,561 INFO L226 Difference]: Without dead ends: 872 [2021-11-03 03:43:27,562 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 03:43:27,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-11-03 03:43:27,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 399. [2021-11-03 03:43:27,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 383 states have (on average 1.248041775456919) internal successors, (478), 398 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:27,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 478 transitions. [2021-11-03 03:43:27,647 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 478 transitions. Word has length 80 [2021-11-03 03:43:27,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:27,647 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 478 transitions. [2021-11-03 03:43:27,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:27,648 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 478 transitions. [2021-11-03 03:43:27,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 03:43:27,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:27,649 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:27,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-03 03:43:27,650 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:27,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:27,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1004873075, now seen corresponding path program 1 times [2021-11-03 03:43:27,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:27,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781388224] [2021-11-03 03:43:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:27,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:27,756 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 03:43:27,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:27,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781388224] [2021-11-03 03:43:27,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781388224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:27,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:27,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:27,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540825618] [2021-11-03 03:43:27,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:27,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:27,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:27,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:27,759 INFO L87 Difference]: Start difference. First operand 399 states and 478 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:28,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:28,659 INFO L93 Difference]: Finished difference Result 689 states and 833 transitions. [2021-11-03 03:43:28,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:43:28,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-03 03:43:28,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:28,662 INFO L225 Difference]: With dead ends: 689 [2021-11-03 03:43:28,663 INFO L226 Difference]: Without dead ends: 640 [2021-11-03 03:43:28,663 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 03:43:28,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-11-03 03:43:28,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 395. [2021-11-03 03:43:28,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.2480211081794195) internal successors, (473), 394 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:28,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 473 transitions. [2021-11-03 03:43:28,741 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 473 transitions. Word has length 81 [2021-11-03 03:43:28,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:28,741 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 473 transitions. [2021-11-03 03:43:28,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:28,741 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 473 transitions. [2021-11-03 03:43:28,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 03:43:28,743 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:28,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:28,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-03 03:43:28,743 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:28,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:28,744 INFO L85 PathProgramCache]: Analyzing trace with hash 105375042, now seen corresponding path program 1 times [2021-11-03 03:43:28,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:28,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229177220] [2021-11-03 03:43:28,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:28,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:28,842 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 03:43:28,842 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:28,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229177220] [2021-11-03 03:43:28,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229177220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:28,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:28,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:28,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404560532] [2021-11-03 03:43:28,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:28,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:28,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:28,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:28,844 INFO L87 Difference]: Start difference. First operand 395 states and 473 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:29,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:29,891 INFO L93 Difference]: Finished difference Result 725 states and 880 transitions. [2021-11-03 03:43:29,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:43:29,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-03 03:43:29,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:29,894 INFO L225 Difference]: With dead ends: 725 [2021-11-03 03:43:29,894 INFO L226 Difference]: Without dead ends: 664 [2021-11-03 03:43:29,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 03:43:29,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-11-03 03:43:29,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 391. [2021-11-03 03:43:29,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 375 states have (on average 1.248) internal successors, (468), 390 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:29,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 468 transitions. [2021-11-03 03:43:29,970 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 468 transitions. Word has length 81 [2021-11-03 03:43:29,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:29,971 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 468 transitions. [2021-11-03 03:43:29,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:29,971 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 468 transitions. [2021-11-03 03:43:29,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 03:43:29,972 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:29,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:29,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-03 03:43:29,973 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:29,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:29,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2085378986, now seen corresponding path program 1 times [2021-11-03 03:43:29,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:29,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137748542] [2021-11-03 03:43:29,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:29,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:30,069 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 03:43:30,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:30,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137748542] [2021-11-03 03:43:30,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137748542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:30,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:30,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:30,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561431932] [2021-11-03 03:43:30,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:30,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:30,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:30,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:30,071 INFO L87 Difference]: Start difference. First operand 391 states and 468 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:30,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:30,978 INFO L93 Difference]: Finished difference Result 641 states and 769 transitions. [2021-11-03 03:43:30,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:43:30,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-03 03:43:30,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:30,981 INFO L225 Difference]: With dead ends: 641 [2021-11-03 03:43:30,982 INFO L226 Difference]: Without dead ends: 636 [2021-11-03 03:43:30,982 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 03:43:30,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-11-03 03:43:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 387. [2021-11-03 03:43:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 371 states have (on average 1.247978436657682) internal successors, (463), 386 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 463 transitions. [2021-11-03 03:43:31,083 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 463 transitions. Word has length 81 [2021-11-03 03:43:31,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:31,083 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 463 transitions. [2021-11-03 03:43:31,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:31,083 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 463 transitions. [2021-11-03 03:43:31,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 03:43:31,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:31,085 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:31,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-03 03:43:31,085 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:31,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1507957345, now seen corresponding path program 1 times [2021-11-03 03:43:31,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:31,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898461049] [2021-11-03 03:43:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:31,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:31,181 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 03:43:31,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:31,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898461049] [2021-11-03 03:43:31,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898461049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:31,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:31,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:31,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695797262] [2021-11-03 03:43:31,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:31,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:31,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:31,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:31,183 INFO L87 Difference]: Start difference. First operand 387 states and 463 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:32,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:32,312 INFO L93 Difference]: Finished difference Result 682 states and 823 transitions. [2021-11-03 03:43:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:43:32,312 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-03 03:43:32,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:32,316 INFO L225 Difference]: With dead ends: 682 [2021-11-03 03:43:32,316 INFO L226 Difference]: Without dead ends: 636 [2021-11-03 03:43:32,317 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 03:43:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-11-03 03:43:32,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 383. [2021-11-03 03:43:32,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 367 states have (on average 1.2479564032697548) internal successors, (458), 382 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:32,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 458 transitions. [2021-11-03 03:43:32,418 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 458 transitions. Word has length 81 [2021-11-03 03:43:32,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:32,418 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 458 transitions. [2021-11-03 03:43:32,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:32,418 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 458 transitions. [2021-11-03 03:43:32,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 03:43:32,419 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:32,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:32,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-03 03:43:32,420 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:32,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:32,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1069510264, now seen corresponding path program 1 times [2021-11-03 03:43:32,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:32,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627802143] [2021-11-03 03:43:32,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:32,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:32,519 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 03:43:32,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:32,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627802143] [2021-11-03 03:43:32,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627802143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:32,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:32,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:32,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648273868] [2021-11-03 03:43:32,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:32,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:32,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:32,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:32,523 INFO L87 Difference]: Start difference. First operand 383 states and 458 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:33,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:33,560 INFO L93 Difference]: Finished difference Result 744 states and 907 transitions. [2021-11-03 03:43:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:43:33,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-03 03:43:33,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:33,563 INFO L225 Difference]: With dead ends: 744 [2021-11-03 03:43:33,563 INFO L226 Difference]: Without dead ends: 660 [2021-11-03 03:43:33,564 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 03:43:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-03 03:43:33,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 379. [2021-11-03 03:43:33,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 363 states have (on average 1.2479338842975207) internal successors, (453), 378 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:33,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 453 transitions. [2021-11-03 03:43:33,658 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 453 transitions. Word has length 81 [2021-11-03 03:43:33,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:33,658 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 453 transitions. [2021-11-03 03:43:33,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:33,658 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 453 transitions. [2021-11-03 03:43:33,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 03:43:33,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:33,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:33,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-03 03:43:33,660 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:33,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:33,660 INFO L85 PathProgramCache]: Analyzing trace with hash 869523368, now seen corresponding path program 1 times [2021-11-03 03:43:33,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:33,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513385973] [2021-11-03 03:43:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:33,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:33,755 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 03:43:33,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:33,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513385973] [2021-11-03 03:43:33,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513385973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:33,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:33,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:33,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236961774] [2021-11-03 03:43:33,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:33,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:33,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:33,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:33,757 INFO L87 Difference]: Start difference. First operand 379 states and 453 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:34,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:34,689 INFO L93 Difference]: Finished difference Result 637 states and 762 transitions. [2021-11-03 03:43:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:43:34,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-03 03:43:34,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:34,692 INFO L225 Difference]: With dead ends: 637 [2021-11-03 03:43:34,692 INFO L226 Difference]: Without dead ends: 632 [2021-11-03 03:43:34,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 03:43:34,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-03 03:43:34,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 375. [2021-11-03 03:43:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.2479108635097493) internal successors, (448), 374 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:34,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 448 transitions. [2021-11-03 03:43:34,780 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 448 transitions. Word has length 81 [2021-11-03 03:43:34,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:34,781 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 448 transitions. [2021-11-03 03:43:34,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:34,781 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 448 transitions. [2021-11-03 03:43:34,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 03:43:34,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:34,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:34,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-03 03:43:34,783 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:34,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:34,783 INFO L85 PathProgramCache]: Analyzing trace with hash -29974665, now seen corresponding path program 1 times [2021-11-03 03:43:34,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:34,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728947157] [2021-11-03 03:43:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:34,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:34,878 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 03:43:34,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:34,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728947157] [2021-11-03 03:43:34,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728947157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:34,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:34,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:43:34,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800394067] [2021-11-03 03:43:34,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:43:34,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:34,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:43:34,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:43:34,880 INFO L87 Difference]: Start difference. First operand 375 states and 448 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:35,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:35,798 INFO L93 Difference]: Finished difference Result 661 states and 796 transitions. [2021-11-03 03:43:35,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:43:35,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-03 03:43:35,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:35,801 INFO L225 Difference]: With dead ends: 661 [2021-11-03 03:43:35,801 INFO L226 Difference]: Without dead ends: 644 [2021-11-03 03:43:35,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 03:43:35,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-11-03 03:43:35,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 371. [2021-11-03 03:43:35,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.2478873239436619) internal successors, (443), 370 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:35,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 443 transitions. [2021-11-03 03:43:35,869 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 443 transitions. Word has length 81 [2021-11-03 03:43:35,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:35,869 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 443 transitions. [2021-11-03 03:43:35,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:35,869 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 443 transitions. [2021-11-03 03:43:35,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 03:43:35,870 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:35,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:35,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-03 03:43:35,871 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:35,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:35,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1274155887, now seen corresponding path program 1 times [2021-11-03 03:43:35,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:35,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994192500] [2021-11-03 03:43:35,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:35,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:36,187 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 03:43:36,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:36,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994192500] [2021-11-03 03:43:36,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994192500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:36,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:36,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 03:43:36,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458846736] [2021-11-03 03:43:36,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:43:36,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:36,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:43:36,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:43:36,189 INFO L87 Difference]: Start difference. First operand 371 states and 443 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:37,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:37,550 INFO L93 Difference]: Finished difference Result 592 states and 701 transitions. [2021-11-03 03:43:37,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:43:37,551 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-03 03:43:37,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:37,564 INFO L225 Difference]: With dead ends: 592 [2021-11-03 03:43:37,564 INFO L226 Difference]: Without dead ends: 544 [2021-11-03 03:43:37,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:43:37,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-11-03 03:43:37,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 367. [2021-11-03 03:43:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 352 states have (on average 1.2443181818181819) internal successors, (438), 366 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 438 transitions. [2021-11-03 03:43:37,675 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 438 transitions. Word has length 82 [2021-11-03 03:43:37,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:37,675 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 438 transitions. [2021-11-03 03:43:37,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:37,676 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 438 transitions. [2021-11-03 03:43:37,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 03:43:37,676 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:37,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:37,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-03 03:43:37,677 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:37,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:37,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1240294261, now seen corresponding path program 1 times [2021-11-03 03:43:37,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:37,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898522332] [2021-11-03 03:43:37,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:37,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:38,151 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 03:43:38,151 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:38,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898522332] [2021-11-03 03:43:38,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898522332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:38,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:38,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 03:43:38,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728577697] [2021-11-03 03:43:38,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 03:43:38,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:38,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 03:43:38,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:43:38,153 INFO L87 Difference]: Start difference. First operand 367 states and 438 transitions. Second operand has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:39,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:39,594 INFO L93 Difference]: Finished difference Result 916 states and 1100 transitions. [2021-11-03 03:43:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 03:43:39,594 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-03 03:43:39,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:39,597 INFO L225 Difference]: With dead ends: 916 [2021-11-03 03:43:39,597 INFO L226 Difference]: Without dead ends: 762 [2021-11-03 03:43:39,598 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=512, Unknown=0, NotChecked=0, Total=702 [2021-11-03 03:43:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-11-03 03:43:39,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 318. [2021-11-03 03:43:39,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 304 states have (on average 1.230263157894737) internal successors, (374), 317 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:39,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 374 transitions. [2021-11-03 03:43:39,710 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 374 transitions. Word has length 82 [2021-11-03 03:43:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:39,711 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 374 transitions. [2021-11-03 03:43:39,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:39,711 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 374 transitions. [2021-11-03 03:43:39,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 03:43:39,711 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:39,711 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:39,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-03 03:43:39,712 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:39,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:39,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1213653297, now seen corresponding path program 1 times [2021-11-03 03:43:39,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:39,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077748984] [2021-11-03 03:43:39,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:39,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:40,009 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 03:43:40,009 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:40,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077748984] [2021-11-03 03:43:40,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077748984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:40,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:40,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 03:43:40,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648620038] [2021-11-03 03:43:40,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:43:40,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:40,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:43:40,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:43:40,011 INFO L87 Difference]: Start difference. First operand 318 states and 374 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:40,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:40,984 INFO L93 Difference]: Finished difference Result 711 states and 868 transitions. [2021-11-03 03:43:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:43:40,984 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-03 03:43:40,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:40,986 INFO L225 Difference]: With dead ends: 711 [2021-11-03 03:43:40,986 INFO L226 Difference]: Without dead ends: 634 [2021-11-03 03:43:40,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:43:40,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-11-03 03:43:41,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 285. [2021-11-03 03:43:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 274 states have (on average 1.218978102189781) internal successors, (334), 284 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 334 transitions. [2021-11-03 03:43:41,057 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 334 transitions. Word has length 82 [2021-11-03 03:43:41,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:41,058 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 334 transitions. [2021-11-03 03:43:41,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:41,058 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 334 transitions. [2021-11-03 03:43:41,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 03:43:41,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:41,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:41,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-03 03:43:41,060 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:41,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:41,060 INFO L85 PathProgramCache]: Analyzing trace with hash -910264626, now seen corresponding path program 1 times [2021-11-03 03:43:41,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:41,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110004417] [2021-11-03 03:43:41,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:41,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:42,269 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 03:43:42,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:42,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110004417] [2021-11-03 03:43:42,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110004417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:42,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:42,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-03 03:43:42,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630484069] [2021-11-03 03:43:42,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-03 03:43:42,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:42,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-03 03:43:42,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2021-11-03 03:43:42,272 INFO L87 Difference]: Start difference. First operand 285 states and 334 transitions. Second operand has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:47,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:47,180 INFO L93 Difference]: Finished difference Result 1004 states and 1183 transitions. [2021-11-03 03:43:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-03 03:43:47,181 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-03 03:43:47,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:47,183 INFO L225 Difference]: With dead ends: 1004 [2021-11-03 03:43:47,183 INFO L226 Difference]: Without dead ends: 956 [2021-11-03 03:43:47,184 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=401, Invalid=2251, Unknown=0, NotChecked=0, Total=2652 [2021-11-03 03:43:47,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-11-03 03:43:47,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 305. [2021-11-03 03:43:47,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 294 states have (on average 1.227891156462585) internal successors, (361), 304 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:47,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 361 transitions. [2021-11-03 03:43:47,267 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 361 transitions. Word has length 82 [2021-11-03 03:43:47,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:47,268 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 361 transitions. [2021-11-03 03:43:47,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:47,268 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 361 transitions. [2021-11-03 03:43:47,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 03:43:47,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:47,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:47,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-03 03:43:47,270 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1175029773, now seen corresponding path program 1 times [2021-11-03 03:43:47,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:47,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783181002] [2021-11-03 03:43:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:47,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:48,096 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 03:43:48,096 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:48,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783181002] [2021-11-03 03:43:48,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783181002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:48,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:48,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-03 03:43:48,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313600224] [2021-11-03 03:43:48,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-03 03:43:48,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:48,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-03 03:43:48,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2021-11-03 03:43:48,098 INFO L87 Difference]: Start difference. First operand 305 states and 361 transitions. Second operand has 22 states, 22 states have (on average 3.727272727272727) internal successors, (82), 22 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:50,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:50,905 INFO L93 Difference]: Finished difference Result 799 states and 956 transitions. [2021-11-03 03:43:50,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 03:43:50,906 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.727272727272727) internal successors, (82), 22 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-03 03:43:50,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:50,907 INFO L225 Difference]: With dead ends: 799 [2021-11-03 03:43:50,908 INFO L226 Difference]: Without dead ends: 726 [2021-11-03 03:43:50,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=255, Invalid=1227, Unknown=0, NotChecked=0, Total=1482 [2021-11-03 03:43:50,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-11-03 03:43:51,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 315. [2021-11-03 03:43:51,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 304 states have (on average 1.2269736842105263) internal successors, (373), 314 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 373 transitions. [2021-11-03 03:43:51,013 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 373 transitions. Word has length 82 [2021-11-03 03:43:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:51,013 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 373 transitions. [2021-11-03 03:43:51,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.727272727272727) internal successors, (82), 22 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:51,014 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 373 transitions. [2021-11-03 03:43:51,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 03:43:51,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:51,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:51,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-03 03:43:51,015 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:51,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:51,015 INFO L85 PathProgramCache]: Analyzing trace with hash 892491034, now seen corresponding path program 1 times [2021-11-03 03:43:51,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:51,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023196348] [2021-11-03 03:43:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:51,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:51,319 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 03:43:51,319 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:51,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023196348] [2021-11-03 03:43:51,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023196348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:51,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:51,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 03:43:51,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670403143] [2021-11-03 03:43:51,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:43:51,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:51,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:43:51,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:43:51,320 INFO L87 Difference]: Start difference. First operand 315 states and 373 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:52,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:52,243 INFO L93 Difference]: Finished difference Result 661 states and 809 transitions. [2021-11-03 03:43:52,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:43:52,244 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-03 03:43:52,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:52,245 INFO L225 Difference]: With dead ends: 661 [2021-11-03 03:43:52,245 INFO L226 Difference]: Without dead ends: 593 [2021-11-03 03:43:52,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:43:52,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-11-03 03:43:52,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 291. [2021-11-03 03:43:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 281 states have (on average 1.2206405693950177) internal successors, (343), 290 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 343 transitions. [2021-11-03 03:43:52,326 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 343 transitions. Word has length 82 [2021-11-03 03:43:52,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:52,326 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 343 transitions. [2021-11-03 03:43:52,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 343 transitions. [2021-11-03 03:43:52,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 03:43:52,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:52,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:52,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-03 03:43:52,327 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:52,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:52,327 INFO L85 PathProgramCache]: Analyzing trace with hash -353750702, now seen corresponding path program 1 times [2021-11-03 03:43:52,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:52,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098716928] [2021-11-03 03:43:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:52,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:52,893 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 03:43:52,893 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:52,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098716928] [2021-11-03 03:43:52,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098716928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:52,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:52,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 03:43:52,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173024351] [2021-11-03 03:43:52,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 03:43:52,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:52,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 03:43:52,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-11-03 03:43:52,895 INFO L87 Difference]: Start difference. First operand 291 states and 343 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:55,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:55,728 INFO L93 Difference]: Finished difference Result 834 states and 976 transitions. [2021-11-03 03:43:55,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 03:43:55,729 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-03 03:43:55,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:55,730 INFO L225 Difference]: With dead ends: 834 [2021-11-03 03:43:55,730 INFO L226 Difference]: Without dead ends: 786 [2021-11-03 03:43:55,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=314, Invalid=1018, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 03:43:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2021-11-03 03:43:55,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 297. [2021-11-03 03:43:55,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 287 states have (on average 1.2195121951219512) internal successors, (350), 296 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:55,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 350 transitions. [2021-11-03 03:43:55,826 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 350 transitions. Word has length 83 [2021-11-03 03:43:55,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:55,826 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 350 transitions. [2021-11-03 03:43:55,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:55,826 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 350 transitions. [2021-11-03 03:43:55,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 03:43:55,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:55,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:55,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-03 03:43:55,827 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:55,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:55,827 INFO L85 PathProgramCache]: Analyzing trace with hash -618515849, now seen corresponding path program 1 times [2021-11-03 03:43:55,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:55,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505854426] [2021-11-03 03:43:55,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:55,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:56,107 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 03:43:56,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:56,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505854426] [2021-11-03 03:43:56,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505854426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:56,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:56,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 03:43:56,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166217907] [2021-11-03 03:43:56,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:43:56,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:56,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:43:56,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:43:56,109 INFO L87 Difference]: Start difference. First operand 297 states and 350 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:57,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:57,212 INFO L93 Difference]: Finished difference Result 683 states and 834 transitions. [2021-11-03 03:43:57,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:43:57,212 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-03 03:43:57,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:57,213 INFO L225 Difference]: With dead ends: 683 [2021-11-03 03:43:57,213 INFO L226 Difference]: Without dead ends: 591 [2021-11-03 03:43:57,214 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:43:57,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-11-03 03:43:57,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 249. [2021-11-03 03:43:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 242 states have (on average 1.2148760330578512) internal successors, (294), 248 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 294 transitions. [2021-11-03 03:43:57,295 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 294 transitions. Word has length 83 [2021-11-03 03:43:57,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:57,295 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 294 transitions. [2021-11-03 03:43:57,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:57,296 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 294 transitions. [2021-11-03 03:43:57,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 03:43:57,296 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:57,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:57,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-03 03:43:57,296 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:57,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:57,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2054469261, now seen corresponding path program 1 times [2021-11-03 03:43:57,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:57,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261012442] [2021-11-03 03:43:57,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:57,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:57,628 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 03:43:57,628 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:57,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261012442] [2021-11-03 03:43:57,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261012442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:57,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:57,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 03:43:57,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825766138] [2021-11-03 03:43:57,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 03:43:57,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:57,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 03:43:57,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:43:57,630 INFO L87 Difference]: Start difference. First operand 249 states and 294 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:58,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:43:58,831 INFO L93 Difference]: Finished difference Result 575 states and 695 transitions. [2021-11-03 03:43:58,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 03:43:58,832 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-03 03:43:58,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:43:58,833 INFO L225 Difference]: With dead ends: 575 [2021-11-03 03:43:58,833 INFO L226 Difference]: Without dead ends: 520 [2021-11-03 03:43:58,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-03 03:43:58,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-11-03 03:43:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 238. [2021-11-03 03:43:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 232 states have (on average 1.206896551724138) internal successors, (280), 237 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 280 transitions. [2021-11-03 03:43:58,926 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 280 transitions. Word has length 83 [2021-11-03 03:43:58,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:43:58,926 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 280 transitions. [2021-11-03 03:43:58,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:43:58,926 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 280 transitions. [2021-11-03 03:43:58,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 03:43:58,927 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:58,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:43:58,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-03 03:43:58,927 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:43:58,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:58,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1607276775, now seen corresponding path program 1 times [2021-11-03 03:43:58,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:43:58,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762715385] [2021-11-03 03:43:58,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:58,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:43:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:59,234 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 03:43:59,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:43:59,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762715385] [2021-11-03 03:43:59,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762715385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:59,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:59,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 03:43:59,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622755192] [2021-11-03 03:43:59,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 03:43:59,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:43:59,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 03:43:59,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:43:59,236 INFO L87 Difference]: Start difference. First operand 238 states and 280 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:00,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:00,708 INFO L93 Difference]: Finished difference Result 828 states and 1022 transitions. [2021-11-03 03:44:00,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 03:44:00,709 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-03 03:44:00,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:00,710 INFO L225 Difference]: With dead ends: 828 [2021-11-03 03:44:00,710 INFO L226 Difference]: Without dead ends: 777 [2021-11-03 03:44:00,710 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2021-11-03 03:44:00,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-11-03 03:44:00,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 231. [2021-11-03 03:44:00,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 225 states have (on average 1.2) internal successors, (270), 230 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:00,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 270 transitions. [2021-11-03 03:44:00,795 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 270 transitions. Word has length 83 [2021-11-03 03:44:00,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:00,796 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 270 transitions. [2021-11-03 03:44:00,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:00,796 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 270 transitions. [2021-11-03 03:44:00,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 03:44:00,797 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:00,797 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:00,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-03 03:44:00,798 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:00,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:00,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2077271506, now seen corresponding path program 1 times [2021-11-03 03:44:00,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:00,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484785424] [2021-11-03 03:44:00,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:00,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:01,026 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 03:44:01,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:01,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484785424] [2021-11-03 03:44:01,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484785424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:01,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:01,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 03:44:01,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325365902] [2021-11-03 03:44:01,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:44:01,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:01,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:44:01,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:44:01,028 INFO L87 Difference]: Start difference. First operand 231 states and 270 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:01,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:01,655 INFO L93 Difference]: Finished difference Result 397 states and 477 transitions. [2021-11-03 03:44:01,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 03:44:01,655 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-03 03:44:01,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:01,656 INFO L225 Difference]: With dead ends: 397 [2021-11-03 03:44:01,656 INFO L226 Difference]: Without dead ends: 336 [2021-11-03 03:44:01,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-11-03 03:44:01,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-11-03 03:44:01,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 214. [2021-11-03 03:44:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.1913875598086126) internal successors, (249), 213 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 249 transitions. [2021-11-03 03:44:01,741 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 249 transitions. Word has length 83 [2021-11-03 03:44:01,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:01,741 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 249 transitions. [2021-11-03 03:44:01,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:01,741 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 249 transitions. [2021-11-03 03:44:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 03:44:01,741 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:01,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:01,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-03 03:44:01,742 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:01,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:01,742 INFO L85 PathProgramCache]: Analyzing trace with hash -669735133, now seen corresponding path program 1 times [2021-11-03 03:44:01,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:01,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225600697] [2021-11-03 03:44:01,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:01,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:02,042 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 03:44:02,042 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:02,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225600697] [2021-11-03 03:44:02,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225600697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:02,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:02,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 03:44:02,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114560697] [2021-11-03 03:44:02,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:44:02,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:02,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:44:02,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:44:02,043 INFO L87 Difference]: Start difference. First operand 214 states and 249 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:02,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:02,908 INFO L93 Difference]: Finished difference Result 343 states and 406 transitions. [2021-11-03 03:44:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 03:44:02,910 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-03 03:44:02,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:02,911 INFO L225 Difference]: With dead ends: 343 [2021-11-03 03:44:02,911 INFO L226 Difference]: Without dead ends: 295 [2021-11-03 03:44:02,913 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-03 03:44:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-03 03:44:02,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 183. [2021-11-03 03:44:02,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 179 states have (on average 1.1675977653631284) internal successors, (209), 182 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 209 transitions. [2021-11-03 03:44:02,997 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 209 transitions. Word has length 83 [2021-11-03 03:44:02,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:02,997 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 209 transitions. [2021-11-03 03:44:02,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:02,998 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 209 transitions. [2021-11-03 03:44:02,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 03:44:02,998 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:02,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:02,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-03 03:44:02,998 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:02,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:02,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1732888836, now seen corresponding path program 1 times [2021-11-03 03:44:02,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:02,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210785496] [2021-11-03 03:44:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:02,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:03,093 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 03:44:03,093 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:03,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210785496] [2021-11-03 03:44:03,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210785496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:03,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:03,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:44:03,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974797883] [2021-11-03 03:44:03,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:44:03,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:03,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:44:03,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:44:03,095 INFO L87 Difference]: Start difference. First operand 183 states and 209 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:03,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:03,554 INFO L93 Difference]: Finished difference Result 269 states and 310 transitions. [2021-11-03 03:44:03,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 03:44:03,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-03 03:44:03,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:03,556 INFO L225 Difference]: With dead ends: 269 [2021-11-03 03:44:03,556 INFO L226 Difference]: Without dead ends: 262 [2021-11-03 03:44:03,556 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:44:03,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-03 03:44:03,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 183. [2021-11-03 03:44:03,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 179 states have (on average 1.1620111731843576) internal successors, (208), 182 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 208 transitions. [2021-11-03 03:44:03,630 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 208 transitions. Word has length 83 [2021-11-03 03:44:03,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:03,630 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 208 transitions. [2021-11-03 03:44:03,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:03,630 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 208 transitions. [2021-11-03 03:44:03,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 03:44:03,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:03,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:03,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-03 03:44:03,631 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:03,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:03,631 INFO L85 PathProgramCache]: Analyzing trace with hash 956701402, now seen corresponding path program 1 times [2021-11-03 03:44:03,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:03,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237679553] [2021-11-03 03:44:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:03,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:03,790 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 03:44:03,790 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:03,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237679553] [2021-11-03 03:44:03,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237679553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:03,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:03,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 03:44:03,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476932900] [2021-11-03 03:44:03,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:44:03,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:03,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:44:03,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:44:03,792 INFO L87 Difference]: Start difference. First operand 183 states and 208 transitions. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:05,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:05,462 INFO L93 Difference]: Finished difference Result 690 states and 852 transitions. [2021-11-03 03:44:05,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 03:44:05,462 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-03 03:44:05,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:05,463 INFO L225 Difference]: With dead ends: 690 [2021-11-03 03:44:05,463 INFO L226 Difference]: Without dead ends: 628 [2021-11-03 03:44:05,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2021-11-03 03:44:05,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-03 03:44:05,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 187. [2021-11-03 03:44:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 183 states have (on average 1.1584699453551912) internal successors, (212), 186 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 212 transitions. [2021-11-03 03:44:05,543 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 212 transitions. Word has length 83 [2021-11-03 03:44:05,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:05,544 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 212 transitions. [2021-11-03 03:44:05,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:05,544 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 212 transitions. [2021-11-03 03:44:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 03:44:05,544 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:05,544 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:05,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-03 03:44:05,544 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:05,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:05,545 INFO L85 PathProgramCache]: Analyzing trace with hash -658994321, now seen corresponding path program 1 times [2021-11-03 03:44:05,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:05,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740487912] [2021-11-03 03:44:05,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:05,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:05,706 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 03:44:05,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:05,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740487912] [2021-11-03 03:44:05,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740487912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:05,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:05,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 03:44:05,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487555729] [2021-11-03 03:44:05,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:44:05,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:05,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:44:05,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:44:05,708 INFO L87 Difference]: Start difference. First operand 187 states and 212 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:06,731 INFO L93 Difference]: Finished difference Result 385 states and 457 transitions. [2021-11-03 03:44:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 03:44:06,731 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-03 03:44:06,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:06,732 INFO L225 Difference]: With dead ends: 385 [2021-11-03 03:44:06,732 INFO L226 Difference]: Without dead ends: 378 [2021-11-03 03:44:06,732 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2021-11-03 03:44:06,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-11-03 03:44:06,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 191. [2021-11-03 03:44:06,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 187 states have (on average 1.1550802139037433) internal successors, (216), 190 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:06,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 216 transitions. [2021-11-03 03:44:06,821 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 216 transitions. Word has length 84 [2021-11-03 03:44:06,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:06,822 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 216 transitions. [2021-11-03 03:44:06,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:06,822 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 216 transitions. [2021-11-03 03:44:06,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 03:44:06,822 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:06,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:06,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-03 03:44:06,823 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:06,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:06,824 INFO L85 PathProgramCache]: Analyzing trace with hash -176818907, now seen corresponding path program 1 times [2021-11-03 03:44:06,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:06,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785950730] [2021-11-03 03:44:06,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:06,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:06,913 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 03:44:06,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:06,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785950730] [2021-11-03 03:44:06,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785950730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:06,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:06,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:44:06,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241125130] [2021-11-03 03:44:06,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:44:06,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:06,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:44:06,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:44:06,915 INFO L87 Difference]: Start difference. First operand 191 states and 216 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:07,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:07,515 INFO L93 Difference]: Finished difference Result 356 states and 415 transitions. [2021-11-03 03:44:07,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:44:07,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-03 03:44:07,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:07,516 INFO L225 Difference]: With dead ends: 356 [2021-11-03 03:44:07,516 INFO L226 Difference]: Without dead ends: 294 [2021-11-03 03:44:07,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-03 03:44:07,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-03 03:44:07,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 187. [2021-11-03 03:44:07,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 183 states have (on average 1.1530054644808743) internal successors, (211), 186 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:07,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 211 transitions. [2021-11-03 03:44:07,611 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 211 transitions. Word has length 84 [2021-11-03 03:44:07,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:07,611 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 211 transitions. [2021-11-03 03:44:07,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:07,611 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 211 transitions. [2021-11-03 03:44:07,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 03:44:07,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:07,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:07,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-03 03:44:07,612 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:07,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1316761171, now seen corresponding path program 1 times [2021-11-03 03:44:07,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:07,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604886649] [2021-11-03 03:44:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:07,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:07,702 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 03:44:07,702 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:07,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604886649] [2021-11-03 03:44:07,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604886649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:07,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:07,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:44:07,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767273625] [2021-11-03 03:44:07,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:44:07,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:07,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:44:07,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:44:07,705 INFO L87 Difference]: Start difference. First operand 187 states and 211 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:08,217 INFO L93 Difference]: Finished difference Result 269 states and 307 transitions. [2021-11-03 03:44:08,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 03:44:08,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-03 03:44:08,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:08,218 INFO L225 Difference]: With dead ends: 269 [2021-11-03 03:44:08,218 INFO L226 Difference]: Without dead ends: 262 [2021-11-03 03:44:08,219 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-11-03 03:44:08,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-03 03:44:08,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 183. [2021-11-03 03:44:08,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 179 states have (on average 1.1508379888268156) internal successors, (206), 182 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:08,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 206 transitions. [2021-11-03 03:44:08,298 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 206 transitions. Word has length 85 [2021-11-03 03:44:08,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:08,298 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 206 transitions. [2021-11-03 03:44:08,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 206 transitions. [2021-11-03 03:44:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 03:44:08,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:08,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:08,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-03 03:44:08,299 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:08,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:08,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1737767892, now seen corresponding path program 1 times [2021-11-03 03:44:08,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:08,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958143723] [2021-11-03 03:44:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:08,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:09,269 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 03:44:09,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:09,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958143723] [2021-11-03 03:44:09,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958143723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:09,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:09,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-03 03:44:09,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977753599] [2021-11-03 03:44:09,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-03 03:44:09,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:09,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-03 03:44:09,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2021-11-03 03:44:09,270 INFO L87 Difference]: Start difference. First operand 183 states and 206 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:12,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:12,884 INFO L93 Difference]: Finished difference Result 649 states and 755 transitions. [2021-11-03 03:44:12,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 03:44:12,885 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-03 03:44:12,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:12,886 INFO L225 Difference]: With dead ends: 649 [2021-11-03 03:44:12,886 INFO L226 Difference]: Without dead ends: 641 [2021-11-03 03:44:12,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=373, Invalid=1979, Unknown=0, NotChecked=0, Total=2352 [2021-11-03 03:44:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-11-03 03:44:12,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 202. [2021-11-03 03:44:12,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 198 states have (on average 1.1565656565656566) internal successors, (229), 201 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:12,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 229 transitions. [2021-11-03 03:44:12,984 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 229 transitions. Word has length 85 [2021-11-03 03:44:12,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:12,984 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 229 transitions. [2021-11-03 03:44:12,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:12,984 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 229 transitions. [2021-11-03 03:44:12,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 03:44:12,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:12,985 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:12,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-03 03:44:12,985 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:12,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:12,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2073632219, now seen corresponding path program 1 times [2021-11-03 03:44:12,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:12,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611128111] [2021-11-03 03:44:12,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:12,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:13,926 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 03:44:13,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:13,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611128111] [2021-11-03 03:44:13,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611128111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:13,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:13,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-03 03:44:13,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96107230] [2021-11-03 03:44:13,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-03 03:44:13,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:13,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-03 03:44:13,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2021-11-03 03:44:13,929 INFO L87 Difference]: Start difference. First operand 202 states and 229 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:17,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:17,600 INFO L93 Difference]: Finished difference Result 743 states and 878 transitions. [2021-11-03 03:44:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-03 03:44:17,601 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-03 03:44:17,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:17,602 INFO L225 Difference]: With dead ends: 743 [2021-11-03 03:44:17,602 INFO L226 Difference]: Without dead ends: 737 [2021-11-03 03:44:17,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=393, Invalid=2057, Unknown=0, NotChecked=0, Total=2450 [2021-11-03 03:44:17,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-11-03 03:44:17,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 208. [2021-11-03 03:44:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 204 states have (on average 1.161764705882353) internal successors, (237), 207 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 237 transitions. [2021-11-03 03:44:17,711 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 237 transitions. Word has length 85 [2021-11-03 03:44:17,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:17,711 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 237 transitions. [2021-11-03 03:44:17,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:17,712 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 237 transitions. [2021-11-03 03:44:17,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 03:44:17,712 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:17,712 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:17,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-03 03:44:17,713 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:17,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:17,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1205220568, now seen corresponding path program 1 times [2021-11-03 03:44:17,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:17,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065711971] [2021-11-03 03:44:17,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:17,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:18,087 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 03:44:18,087 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:18,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065711971] [2021-11-03 03:44:18,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065711971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:18,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:18,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 03:44:18,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435162954] [2021-11-03 03:44:18,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 03:44:18,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:18,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 03:44:18,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:44:18,088 INFO L87 Difference]: Start difference. First operand 208 states and 237 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:19,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:19,493 INFO L93 Difference]: Finished difference Result 539 states and 642 transitions. [2021-11-03 03:44:19,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 03:44:19,494 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-03 03:44:19,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:19,494 INFO L225 Difference]: With dead ends: 539 [2021-11-03 03:44:19,494 INFO L226 Difference]: Without dead ends: 524 [2021-11-03 03:44:19,495 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-03 03:44:19,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-11-03 03:44:19,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 192. [2021-11-03 03:44:19,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 189 states have (on average 1.1587301587301588) internal successors, (219), 191 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:19,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 219 transitions. [2021-11-03 03:44:19,609 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 219 transitions. Word has length 86 [2021-11-03 03:44:19,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:19,609 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 219 transitions. [2021-11-03 03:44:19,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:19,610 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 219 transitions. [2021-11-03 03:44:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 03:44:19,610 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:19,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:19,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-03 03:44:19,610 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:19,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:19,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1688787753, now seen corresponding path program 1 times [2021-11-03 03:44:19,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:19,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727516604] [2021-11-03 03:44:19,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:19,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:20,111 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 03:44:20,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:20,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727516604] [2021-11-03 03:44:20,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727516604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:20,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:20,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 03:44:20,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234898404] [2021-11-03 03:44:20,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 03:44:20,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:20,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 03:44:20,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-11-03 03:44:20,113 INFO L87 Difference]: Start difference. First operand 192 states and 219 transitions. Second operand has 16 states, 16 states have (on average 5.375) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:23,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:23,842 INFO L93 Difference]: Finished difference Result 933 states and 1150 transitions. [2021-11-03 03:44:23,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-03 03:44:23,843 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-03 03:44:23,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:23,844 INFO L225 Difference]: With dead ends: 933 [2021-11-03 03:44:23,844 INFO L226 Difference]: Without dead ends: 927 [2021-11-03 03:44:23,844 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=417, Invalid=1475, Unknown=0, NotChecked=0, Total=1892 [2021-11-03 03:44:23,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-03 03:44:23,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 205. [2021-11-03 03:44:23,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 202 states have (on average 1.1584158415841583) internal successors, (234), 204 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:23,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 234 transitions. [2021-11-03 03:44:23,952 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 234 transitions. Word has length 86 [2021-11-03 03:44:23,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:23,952 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 234 transitions. [2021-11-03 03:44:23,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:23,952 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 234 transitions. [2021-11-03 03:44:23,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 03:44:23,953 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:23,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:23,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-03 03:44:23,954 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:23,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:23,954 INFO L85 PathProgramCache]: Analyzing trace with hash -517274209, now seen corresponding path program 1 times [2021-11-03 03:44:23,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:23,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252183289] [2021-11-03 03:44:23,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:23,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:25,238 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 03:44:25,238 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:25,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252183289] [2021-11-03 03:44:25,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252183289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:25,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:25,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-03 03:44:25,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993214502] [2021-11-03 03:44:25,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-03 03:44:25,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-03 03:44:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2021-11-03 03:44:25,239 INFO L87 Difference]: Start difference. First operand 205 states and 234 transitions. Second operand has 28 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 27 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:31,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:31,168 INFO L93 Difference]: Finished difference Result 737 states and 885 transitions. [2021-11-03 03:44:31,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-03 03:44:31,169 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 27 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-03 03:44:31,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:31,170 INFO L225 Difference]: With dead ends: 737 [2021-11-03 03:44:31,170 INFO L226 Difference]: Without dead ends: 729 [2021-11-03 03:44:31,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=591, Invalid=2379, Unknown=0, NotChecked=0, Total=2970 [2021-11-03 03:44:31,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-11-03 03:44:31,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 215. [2021-11-03 03:44:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 212 states have (on average 1.1556603773584906) internal successors, (245), 214 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:31,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 245 transitions. [2021-11-03 03:44:31,306 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 245 transitions. Word has length 86 [2021-11-03 03:44:31,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:31,306 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 245 transitions. [2021-11-03 03:44:31,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 27 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:31,306 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 245 transitions. [2021-11-03 03:44:31,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 03:44:31,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:31,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:31,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-03 03:44:31,307 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:31,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:31,307 INFO L85 PathProgramCache]: Analyzing trace with hash -612658842, now seen corresponding path program 1 times [2021-11-03 03:44:31,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:31,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717067676] [2021-11-03 03:44:31,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:31,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:31,548 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 03:44:31,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:31,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717067676] [2021-11-03 03:44:31,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717067676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:31,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:31,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 03:44:31,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147664929] [2021-11-03 03:44:31,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:44:31,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:31,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:44:31,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:44:31,550 INFO L87 Difference]: Start difference. First operand 215 states and 245 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:32,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:32,379 INFO L93 Difference]: Finished difference Result 394 states and 468 transitions. [2021-11-03 03:44:32,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:44:32,380 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-03 03:44:32,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:32,381 INFO L225 Difference]: With dead ends: 394 [2021-11-03 03:44:32,381 INFO L226 Difference]: Without dead ends: 388 [2021-11-03 03:44:32,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:44:32,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-03 03:44:32,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 175. [2021-11-03 03:44:32,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 173 states have (on average 1.1445086705202312) internal successors, (198), 174 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:32,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 198 transitions. [2021-11-03 03:44:32,477 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 198 transitions. Word has length 86 [2021-11-03 03:44:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:32,477 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 198 transitions. [2021-11-03 03:44:32,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 198 transitions. [2021-11-03 03:44:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 03:44:32,478 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:32,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:32,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-03 03:44:32,478 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:32,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:32,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2135988449, now seen corresponding path program 1 times [2021-11-03 03:44:32,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:32,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654020805] [2021-11-03 03:44:32,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:32,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:32,707 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 03:44:32,707 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:32,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654020805] [2021-11-03 03:44:32,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654020805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:32,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:32,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 03:44:32,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532581040] [2021-11-03 03:44:32,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:44:32,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:32,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:44:32,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:44:32,709 INFO L87 Difference]: Start difference. First operand 175 states and 198 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:33,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:33,482 INFO L93 Difference]: Finished difference Result 352 states and 419 transitions. [2021-11-03 03:44:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 03:44:33,482 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-11-03 03:44:33,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:33,483 INFO L225 Difference]: With dead ends: 352 [2021-11-03 03:44:33,483 INFO L226 Difference]: Without dead ends: 312 [2021-11-03 03:44:33,483 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:44:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-03 03:44:33,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 135. [2021-11-03 03:44:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.1492537313432836) internal successors, (154), 134 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:33,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 154 transitions. [2021-11-03 03:44:33,571 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 154 transitions. Word has length 87 [2021-11-03 03:44:33,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:33,571 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 154 transitions. [2021-11-03 03:44:33,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:33,571 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 154 transitions. [2021-11-03 03:44:33,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 03:44:33,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:33,572 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:33,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-03 03:44:33,572 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:33,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:33,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1279914286, now seen corresponding path program 1 times [2021-11-03 03:44:33,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:33,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770740132] [2021-11-03 03:44:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:33,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:33,619 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 03:44:33,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:33,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770740132] [2021-11-03 03:44:33,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770740132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:33,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:33,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:44:33,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677026191] [2021-11-03 03:44:33,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:44:33,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:33,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:44:33,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:44:33,621 INFO L87 Difference]: Start difference. First operand 135 states and 154 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:33,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:33,815 INFO L93 Difference]: Finished difference Result 223 states and 268 transitions. [2021-11-03 03:44:33,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:44:33,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-03 03:44:33,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:33,816 INFO L225 Difference]: With dead ends: 223 [2021-11-03 03:44:33,816 INFO L226 Difference]: Without dead ends: 179 [2021-11-03 03:44:33,816 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 03:44:33,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-03 03:44:33,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 173. [2021-11-03 03:44:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.186046511627907) internal successors, (204), 172 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 204 transitions. [2021-11-03 03:44:33,992 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 204 transitions. Word has length 103 [2021-11-03 03:44:33,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:33,993 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 204 transitions. [2021-11-03 03:44:33,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:33,993 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 204 transitions. [2021-11-03 03:44:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 03:44:33,994 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:33,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:33,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-03 03:44:33,994 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:33,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:33,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1764263082, now seen corresponding path program 1 times [2021-11-03 03:44:33,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:33,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844604025] [2021-11-03 03:44:33,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:33,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:34,034 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 03:44:34,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:34,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844604025] [2021-11-03 03:44:34,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844604025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:34,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:34,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:44:34,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287429192] [2021-11-03 03:44:34,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:44:34,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:34,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:44:34,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:44:34,036 INFO L87 Difference]: Start difference. First operand 173 states and 204 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:34,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:34,354 INFO L93 Difference]: Finished difference Result 337 states and 418 transitions. [2021-11-03 03:44:34,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:44:34,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-03 03:44:34,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:34,355 INFO L225 Difference]: With dead ends: 337 [2021-11-03 03:44:34,355 INFO L226 Difference]: Without dead ends: 255 [2021-11-03 03:44:34,355 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 03:44:34,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-03 03:44:34,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 245. [2021-11-03 03:44:34,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.221311475409836) internal successors, (298), 244 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:34,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 298 transitions. [2021-11-03 03:44:34,631 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 298 transitions. Word has length 106 [2021-11-03 03:44:34,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:34,631 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 298 transitions. [2021-11-03 03:44:34,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:34,631 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 298 transitions. [2021-11-03 03:44:34,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 03:44:34,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:34,632 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:34,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-03 03:44:34,632 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:34,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1482616109, now seen corresponding path program 1 times [2021-11-03 03:44:34,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:34,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719470379] [2021-11-03 03:44:34,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:34,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:34,675 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 03:44:34,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:34,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719470379] [2021-11-03 03:44:34,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719470379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:34,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:34,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:44:34,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748165643] [2021-11-03 03:44:34,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:44:34,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:34,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:44:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:44:34,677 INFO L87 Difference]: Start difference. First operand 245 states and 298 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:35,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:35,225 INFO L93 Difference]: Finished difference Result 553 states and 700 transitions. [2021-11-03 03:44:35,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:44:35,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-03 03:44:35,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:35,226 INFO L225 Difference]: With dead ends: 553 [2021-11-03 03:44:35,227 INFO L226 Difference]: Without dead ends: 399 [2021-11-03 03:44:35,227 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 03:44:35,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-11-03 03:44:35,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 381. [2021-11-03 03:44:35,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.2473684210526317) internal successors, (474), 380 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 474 transitions. [2021-11-03 03:44:35,713 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 474 transitions. Word has length 109 [2021-11-03 03:44:35,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:35,713 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 474 transitions. [2021-11-03 03:44:35,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:35,714 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 474 transitions. [2021-11-03 03:44:35,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:44:35,714 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:35,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:35,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-03 03:44:35,714 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:35,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:35,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1831546139, now seen corresponding path program 1 times [2021-11-03 03:44:35,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:35,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939272691] [2021-11-03 03:44:35,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:35,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:35,754 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 03:44:35,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:35,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939272691] [2021-11-03 03:44:35,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939272691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:35,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:35,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:44:35,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334763874] [2021-11-03 03:44:35,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:44:35,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:35,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:44:35,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:44:35,756 INFO L87 Difference]: Start difference. First operand 381 states and 474 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:36,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:36,769 INFO L93 Difference]: Finished difference Result 961 states and 1228 transitions. [2021-11-03 03:44:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:44:36,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-03 03:44:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:36,770 INFO L225 Difference]: With dead ends: 961 [2021-11-03 03:44:36,770 INFO L226 Difference]: Without dead ends: 671 [2021-11-03 03:44:36,771 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 03:44:36,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-11-03 03:44:37,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 637. [2021-11-03 03:44:37,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 1.2610062893081762) internal successors, (802), 636 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:37,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 802 transitions. [2021-11-03 03:44:37,700 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 802 transitions. Word has length 112 [2021-11-03 03:44:37,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:37,700 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 802 transitions. [2021-11-03 03:44:37,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:37,701 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 802 transitions. [2021-11-03 03:44:37,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-03 03:44:37,701 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:37,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:37,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-03 03:44:37,701 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:37,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:37,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1847435234, now seen corresponding path program 1 times [2021-11-03 03:44:37,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:37,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345327927] [2021-11-03 03:44:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:37,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:37,748 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 03:44:37,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:37,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345327927] [2021-11-03 03:44:37,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345327927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:37,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:37,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:44:37,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506112165] [2021-11-03 03:44:37,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:44:37,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:37,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:44:37,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:44:37,750 INFO L87 Difference]: Start difference. First operand 637 states and 802 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:39,658 INFO L93 Difference]: Finished difference Result 1729 states and 2212 transitions. [2021-11-03 03:44:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:44:39,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-03 03:44:39,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:39,660 INFO L225 Difference]: With dead ends: 1729 [2021-11-03 03:44:39,660 INFO L226 Difference]: Without dead ends: 1183 [2021-11-03 03:44:39,660 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 03:44:39,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2021-11-03 03:44:41,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1117. [2021-11-03 03:44:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 1.2634408602150538) internal successors, (1410), 1116 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:41,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1410 transitions. [2021-11-03 03:44:41,491 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1410 transitions. Word has length 115 [2021-11-03 03:44:41,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:41,491 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 1410 transitions. [2021-11-03 03:44:41,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:41,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1410 transitions. [2021-11-03 03:44:41,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-03 03:44:41,492 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:41,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:41,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-03 03:44:41,493 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:41,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:41,493 INFO L85 PathProgramCache]: Analyzing trace with hash 208761750, now seen corresponding path program 1 times [2021-11-03 03:44:41,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:41,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250949850] [2021-11-03 03:44:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:41,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:41,569 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 03:44:41,569 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:41,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250949850] [2021-11-03 03:44:41,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250949850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:41,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:41,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:44:41,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94914565] [2021-11-03 03:44:41,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:44:41,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:41,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:44:41,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:44:41,571 INFO L87 Difference]: Start difference. First operand 1117 states and 1410 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:47,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:47,994 INFO L93 Difference]: Finished difference Result 4416 states and 5607 transitions. [2021-11-03 03:44:47,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 03:44:47,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-03 03:44:47,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:48,001 INFO L225 Difference]: With dead ends: 4416 [2021-11-03 03:44:48,001 INFO L226 Difference]: Without dead ends: 3390 [2021-11-03 03:44:48,003 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-03 03:44:48,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3390 states. [2021-11-03 03:44:50,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3390 to 1563. [2021-11-03 03:44:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1562 states have (on average 1.2496798975672214) internal successors, (1952), 1562 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 1952 transitions. [2021-11-03 03:44:50,708 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 1952 transitions. Word has length 118 [2021-11-03 03:44:50,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:50,709 INFO L470 AbstractCegarLoop]: Abstraction has 1563 states and 1952 transitions. [2021-11-03 03:44:50,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:50,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 1952 transitions. [2021-11-03 03:44:50,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-03 03:44:50,709 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:50,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:50,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-03 03:44:50,710 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:50,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:50,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1759867255, now seen corresponding path program 1 times [2021-11-03 03:44:50,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:50,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348286293] [2021-11-03 03:44:50,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:50,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:50,830 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 03:44:50,831 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:50,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348286293] [2021-11-03 03:44:50,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348286293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:50,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:50,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:44:50,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976178711] [2021-11-03 03:44:50,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:44:50,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:50,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:44:50,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:44:50,833 INFO L87 Difference]: Start difference. First operand 1563 states and 1952 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:53,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:53,487 INFO L93 Difference]: Finished difference Result 3037 states and 3808 transitions. [2021-11-03 03:44:53,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:44:53,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2021-11-03 03:44:53,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:53,490 INFO L225 Difference]: With dead ends: 3037 [2021-11-03 03:44:53,490 INFO L226 Difference]: Without dead ends: 1565 [2021-11-03 03:44:53,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:44:53,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2021-11-03 03:44:56,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1563. [2021-11-03 03:44:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1562 states have (on average 1.2490396927016645) internal successors, (1951), 1562 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 1951 transitions. [2021-11-03 03:44:56,353 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 1951 transitions. Word has length 120 [2021-11-03 03:44:56,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:56,353 INFO L470 AbstractCegarLoop]: Abstraction has 1563 states and 1951 transitions. [2021-11-03 03:44:56,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:56,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 1951 transitions. [2021-11-03 03:44:56,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-03 03:44:56,355 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:56,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:56,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-03 03:44:56,355 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:44:56,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:56,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1095330802, now seen corresponding path program 1 times [2021-11-03 03:44:56,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:44:56,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388212567] [2021-11-03 03:44:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:56,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:44:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:56,401 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 03:44:56,401 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:44:56,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388212567] [2021-11-03 03:44:56,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388212567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:56,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:56,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:44:56,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901882111] [2021-11-03 03:44:56,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:44:56,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:44:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:44:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:44:56,404 INFO L87 Difference]: Start difference. First operand 1563 states and 1951 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:00,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:00,771 INFO L93 Difference]: Finished difference Result 3661 states and 4590 transitions. [2021-11-03 03:45:00,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:45:00,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2021-11-03 03:45:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:00,776 INFO L225 Difference]: With dead ends: 3661 [2021-11-03 03:45:00,776 INFO L226 Difference]: Without dead ends: 2189 [2021-11-03 03:45:00,779 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 03:45:00,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2021-11-03 03:45:04,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2187. [2021-11-03 03:45:04,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2186 states have (on average 1.2433668801463862) internal successors, (2718), 2186 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:04,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 2718 transitions. [2021-11-03 03:45:04,891 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 2718 transitions. Word has length 120 [2021-11-03 03:45:04,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:04,891 INFO L470 AbstractCegarLoop]: Abstraction has 2187 states and 2718 transitions. [2021-11-03 03:45:04,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:04,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 2718 transitions. [2021-11-03 03:45:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-03 03:45:04,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:04,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:04,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-03 03:45:04,892 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:45:04,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:04,893 INFO L85 PathProgramCache]: Analyzing trace with hash 871204805, now seen corresponding path program 1 times [2021-11-03 03:45:04,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:04,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267448079] [2021-11-03 03:45:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:04,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:04,977 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 03:45:04,977 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:04,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267448079] [2021-11-03 03:45:04,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267448079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:04,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:04,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:45:04,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669888379] [2021-11-03 03:45:04,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:45:04,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:45:04,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:45:04,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:45:04,979 INFO L87 Difference]: Start difference. First operand 2187 states and 2718 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:10,750 INFO L93 Difference]: Finished difference Result 3014 states and 3724 transitions. [2021-11-03 03:45:10,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:45:10,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-03 03:45:10,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:10,755 INFO L225 Difference]: With dead ends: 3014 [2021-11-03 03:45:10,755 INFO L226 Difference]: Without dead ends: 3012 [2021-11-03 03:45:10,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-03 03:45:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2021-11-03 03:45:14,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2187. [2021-11-03 03:45:14,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2186 states have (on average 1.2287282708142726) internal successors, (2686), 2186 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:14,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 2686 transitions. [2021-11-03 03:45:14,766 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 2686 transitions. Word has length 121 [2021-11-03 03:45:14,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:14,767 INFO L470 AbstractCegarLoop]: Abstraction has 2187 states and 2686 transitions. [2021-11-03 03:45:14,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:14,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 2686 transitions. [2021-11-03 03:45:14,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 03:45:14,769 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:14,769 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:14,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-03 03:45:14,769 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:45:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:14,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1902278096, now seen corresponding path program 1 times [2021-11-03 03:45:14,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:14,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722325545] [2021-11-03 03:45:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:14,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 03:45:14,931 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:14,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722325545] [2021-11-03 03:45:14,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722325545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:14,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:14,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:45:14,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274079011] [2021-11-03 03:45:14,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:45:14,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:45:14,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:45:14,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:45:14,934 INFO L87 Difference]: Start difference. First operand 2187 states and 2686 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:21,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:21,523 INFO L93 Difference]: Finished difference Result 5483 states and 6753 transitions. [2021-11-03 03:45:21,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 03:45:21,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 140 [2021-11-03 03:45:21,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:21,528 INFO L225 Difference]: With dead ends: 5483 [2021-11-03 03:45:21,529 INFO L226 Difference]: Without dead ends: 3381 [2021-11-03 03:45:21,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-03 03:45:21,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2021-11-03 03:45:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 2187. [2021-11-03 03:45:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2186 states have (on average 1.2282708142726442) internal successors, (2685), 2186 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:25,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 2685 transitions. [2021-11-03 03:45:25,422 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 2685 transitions. Word has length 140 [2021-11-03 03:45:25,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:25,422 INFO L470 AbstractCegarLoop]: Abstraction has 2187 states and 2685 transitions. [2021-11-03 03:45:25,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:25,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 2685 transitions. [2021-11-03 03:45:25,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-03 03:45:25,423 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:25,424 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:25,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-03 03:45:25,424 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:45:25,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:25,424 INFO L85 PathProgramCache]: Analyzing trace with hash 292618243, now seen corresponding path program 1 times [2021-11-03 03:45:25,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:25,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701625150] [2021-11-03 03:45:25,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:25,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 03:45:26,148 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:26,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701625150] [2021-11-03 03:45:26,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701625150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:26,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:26,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-03 03:45:26,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572772708] [2021-11-03 03:45:26,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-03 03:45:26,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:45:26,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-03 03:45:26,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2021-11-03 03:45:26,150 INFO L87 Difference]: Start difference. First operand 2187 states and 2685 transitions. Second operand has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:39,842 INFO L93 Difference]: Finished difference Result 8395 states and 10356 transitions. [2021-11-03 03:45:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-03 03:45:39,843 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 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 142 [2021-11-03 03:45:39,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:39,853 INFO L225 Difference]: With dead ends: 8395 [2021-11-03 03:45:39,853 INFO L226 Difference]: Without dead ends: 6292 [2021-11-03 03:45:39,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=329, Invalid=1833, Unknown=0, NotChecked=0, Total=2162 [2021-11-03 03:45:39,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6292 states. [2021-11-03 03:45:44,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6292 to 2207. [2021-11-03 03:45:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 2206 states have (on average 1.2275611967361741) internal successors, (2708), 2206 states have internal predecessors, (2708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:44,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2708 transitions. [2021-11-03 03:45:44,052 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2708 transitions. Word has length 142 [2021-11-03 03:45:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:44,052 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 2708 transitions. [2021-11-03 03:45:44,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:44,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2708 transitions. [2021-11-03 03:45:44,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-03 03:45:44,053 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:44,054 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:44,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-03 03:45:44,054 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 03:45:44,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:44,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1130396807, now seen corresponding path program 1 times [2021-11-03 03:45:44,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:45:44,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285519833] [2021-11-03 03:45:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:44,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:45:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:48,601 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:45:48,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285519833] [2021-11-03 03:45:48,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285519833] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:45:48,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770978690] [2021-11-03 03:45:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:48,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:45:48,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:45:48,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:45:48,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec47a92d-4d16-4339-ae4a-2160502b63a8/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 03:45:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:49,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-03 03:45:49,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:46:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:46:25,537 INFO L328 TraceCheckSpWp]: Computing backward predicates...