./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7 --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 bf3e653d470f38ca10e6f2ef710928478301c2e1b39e054d852fd4b90e26a334 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:56:22,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:56:22,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:56:22,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:56:22,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:56:22,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:56:22,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:56:22,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:56:22,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:56:22,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:56:22,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:56:22,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:56:22,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:56:22,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:56:22,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:56:22,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:56:22,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:56:22,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:56:22,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:56:22,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:56:22,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:56:22,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:56:22,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:56:22,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:56:22,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:56:22,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:56:22,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:56:22,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:56:22,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:56:22,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:56:22,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:56:22,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:56:22,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:56:22,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:56:22,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:56:22,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:56:22,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:56:22,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:56:22,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:56:22,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:56:22,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:56:22,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:56:22,321 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:56:22,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:56:22,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:56:22,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:56:22,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:56:22,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:56:22,325 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:56:22,326 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:56:22,326 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:56:22,326 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:56:22,326 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:56:22,330 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:56:22,330 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:56:22,330 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:56:22,330 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:56:22,331 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:56:22,331 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:56:22,331 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:56:22,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:56:22,332 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:56:22,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:56:22,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:56:22,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:56:22,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:56:22,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:56:22,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:56:22,334 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:56:22,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:56:22,335 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:56:22,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:56:22,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:56:22,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:56:22,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:56:22,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:56:22,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:56:22,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:56:22,338 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:56:22,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:56:22,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:56:22,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:56:22,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:56:22,340 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_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf3e653d470f38ca10e6f2ef710928478301c2e1b39e054d852fd4b90e26a334 [2021-11-25 18:56:22,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:56:22,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:56:22,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:56:22,662 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:56:22,663 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:56:22,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-25 18:56:22,725 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/data/daddd08eb/24f718de4576475fa137628c9dd40062/FLAGe6e38a228 [2021-11-25 18:56:23,558 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:56:23,558 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-25 18:56:23,593 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/data/daddd08eb/24f718de4576475fa137628c9dd40062/FLAGe6e38a228 [2021-11-25 18:56:23,700 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/data/daddd08eb/24f718de4576475fa137628c9dd40062 [2021-11-25 18:56:23,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:56:23,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:56:23,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:56:23,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:56:23,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:56:23,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:56:23" (1/1) ... [2021-11-25 18:56:23,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10cc427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:23, skipping insertion in model container [2021-11-25 18:56:23,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:56:23" (1/1) ... [2021-11-25 18:56:23,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:56:23,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:56:24,843 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[69564,69577] [2021-11-25 18:56:24,971 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[101232,101245] [2021-11-25 18:56:25,043 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[117050,117063] [2021-11-25 18:56:25,083 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[124955,124968] [2021-11-25 18:56:25,098 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[128881,128894] [2021-11-25 18:56:25,112 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132623,132636] [2021-11-25 18:56:25,216 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[163781,163794] [2021-11-25 18:56:25,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[179384,179397] [2021-11-25 18:56:25,297 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[187284,187297] [2021-11-25 18:56:25,311 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[191205,191218] [2021-11-25 18:56:25,325 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[194942,194955] [2021-11-25 18:56:25,382 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[211727,211740] [2021-11-25 18:56:25,409 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[219627,219640] [2021-11-25 18:56:25,424 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[223548,223561] [2021-11-25 18:56:25,438 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[227285,227298] [2021-11-25 18:56:25,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[231785,231798] [2021-11-25 18:56:25,469 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[235573,235586] [2021-11-25 18:56:25,483 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[239494,239507] [2021-11-25 18:56:25,497 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[243231,243244] [2021-11-25 18:56:25,512 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[247352,247365] [2021-11-25 18:56:25,526 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[251105,251118] [2021-11-25 18:56:25,540 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[255022,255035] [2021-11-25 18:56:25,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:56:25,646 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:56:25,887 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[69564,69577] [2021-11-25 18:56:25,977 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[101232,101245] [2021-11-25 18:56:26,033 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[117050,117063] [2021-11-25 18:56:26,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[124955,124968] [2021-11-25 18:56:26,067 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[128881,128894] [2021-11-25 18:56:26,079 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132623,132636] [2021-11-25 18:56:26,190 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[163781,163794] [2021-11-25 18:56:26,233 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[179384,179397] [2021-11-25 18:56:26,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[187284,187297] [2021-11-25 18:56:26,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[191205,191218] [2021-11-25 18:56:26,280 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[194942,194955] [2021-11-25 18:56:26,325 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[211727,211740] [2021-11-25 18:56:26,348 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[219627,219640] [2021-11-25 18:56:26,361 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[223548,223561] [2021-11-25 18:56:26,373 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[227285,227298] [2021-11-25 18:56:26,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[231785,231798] [2021-11-25 18:56:26,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[235573,235586] [2021-11-25 18:56:26,410 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[239494,239507] [2021-11-25 18:56:26,422 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[243231,243244] [2021-11-25 18:56:26,435 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[247352,247365] [2021-11-25 18:56:26,462 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[251105,251118] [2021-11-25 18:56:26,475 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[255022,255035] [2021-11-25 18:56:26,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:56:26,534 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:56:26,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:26 WrapperNode [2021-11-25 18:56:26,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:56:26,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:56:26,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:56:26,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:56:26,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:26" (1/1) ... [2021-11-25 18:56:26,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:26" (1/1) ... [2021-11-25 18:56:26,794 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11488 [2021-11-25 18:56:26,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:56:26,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:56:26,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:56:26,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:56:26,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:26" (1/1) ... [2021-11-25 18:56:26,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:26" (1/1) ... [2021-11-25 18:56:26,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:26" (1/1) ... [2021-11-25 18:56:26,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:26" (1/1) ... [2021-11-25 18:56:26,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:26" (1/1) ... [2021-11-25 18:56:27,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:26" (1/1) ... [2021-11-25 18:56:27,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:26" (1/1) ... [2021-11-25 18:56:27,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:56:27,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:56:27,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:56:27,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:56:27,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:26" (1/1) ... [2021-11-25 18:56:27,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:56:27,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:56:27,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:56:27,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:56:27,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:56:27,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:56:27,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:56:27,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:56:27,558 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:56:27,560 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:56:32,477 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:56:32,989 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:56:32,990 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:56:32,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:32 BoogieIcfgContainer [2021-11-25 18:56:32,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:56:33,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:56:33,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:56:33,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:56:33,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:56:23" (1/3) ... [2021-11-25 18:56:33,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf9a1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:33, skipping insertion in model container [2021-11-25 18:56:33,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:26" (2/3) ... [2021-11-25 18:56:33,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf9a1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:33, skipping insertion in model container [2021-11-25 18:56:33,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:32" (3/3) ... [2021-11-25 18:56:33,009 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-25 18:56:33,017 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:56:33,018 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-11-25 18:56:33,077 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:56:33,083 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 [2021-11-25 18:56:33,084 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-11-25 18:56:33,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 2311 states, 2288 states have (on average 1.8229895104895104) internal successors, (4171), 2310 states have internal predecessors, (4171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:33,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-25 18:56:33,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:33,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:33,183 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:33,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:33,192 INFO L85 PathProgramCache]: Analyzing trace with hash 474104121, now seen corresponding path program 1 times [2021-11-25 18:56:33,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:33,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564298983] [2021-11-25 18:56:33,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:33,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:33,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:33,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564298983] [2021-11-25 18:56:33,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564298983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:33,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:33,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:56:33,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233243499] [2021-11-25 18:56:33,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:33,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:56:33,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:33,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:56:33,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:56:33,875 INFO L87 Difference]: Start difference. First operand has 2311 states, 2288 states have (on average 1.8229895104895104) internal successors, (4171), 2310 states have internal predecessors, (4171), 0 states have call successors, (0), 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 17.0) internal successors, (85), 4 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) [2021-11-25 18:56:35,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:35,639 INFO L93 Difference]: Finished difference Result 2737 states and 4863 transitions. [2021-11-25 18:56:35,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:56:35,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 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 [2021-11-25 18:56:35,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:35,664 INFO L225 Difference]: With dead ends: 2737 [2021-11-25 18:56:35,664 INFO L226 Difference]: Without dead ends: 1585 [2021-11-25 18:56:35,671 INFO L932 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 [2021-11-25 18:56:35,674 INFO L933 BasicCegarLoop]: 1484 mSDtfsCounter, 8232 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8232 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:35,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8232 Valid, 1524 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:56:35,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-11-25 18:56:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1585. [2021-11-25 18:56:35,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1563 states have (on average 1.3122200895713372) internal successors, (2051), 1584 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:35,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2051 transitions. [2021-11-25 18:56:35,796 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2051 transitions. Word has length 85 [2021-11-25 18:56:35,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:35,797 INFO L470 AbstractCegarLoop]: Abstraction has 1585 states and 2051 transitions. [2021-11-25 18:56:35,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 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) [2021-11-25 18:56:35,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2051 transitions. [2021-11-25 18:56:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-25 18:56:35,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:35,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:35,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:56:35,803 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:35,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:35,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1379625602, now seen corresponding path program 1 times [2021-11-25 18:56:35,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:35,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977974896] [2021-11-25 18:56:35,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:35,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:35,956 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:35,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977974896] [2021-11-25 18:56:35,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977974896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:35,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:35,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:56:35,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049304305] [2021-11-25 18:56:35,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:35,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:56:35,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:35,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:56:35,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:56:35,959 INFO L87 Difference]: Start difference. First operand 1585 states and 2051 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 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) [2021-11-25 18:56:37,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:37,314 INFO L93 Difference]: Finished difference Result 2213 states and 2882 transitions. [2021-11-25 18:56:37,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:56:37,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 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 [2021-11-25 18:56:37,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:37,324 INFO L225 Difference]: With dead ends: 2213 [2021-11-25 18:56:37,325 INFO L226 Difference]: Without dead ends: 1457 [2021-11-25 18:56:37,326 INFO L932 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 [2021-11-25 18:56:37,331 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 5518 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5518 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:37,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5518 Valid, 811 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 18:56:37,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-11-25 18:56:37,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1457. [2021-11-25 18:56:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1435 states have (on average 1.3282229965156795) internal successors, (1906), 1456 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:37,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1906 transitions. [2021-11-25 18:56:37,394 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1906 transitions. Word has length 85 [2021-11-25 18:56:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:37,396 INFO L470 AbstractCegarLoop]: Abstraction has 1457 states and 1906 transitions. [2021-11-25 18:56:37,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 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) [2021-11-25 18:56:37,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1906 transitions. [2021-11-25 18:56:37,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-25 18:56:37,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:37,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:37,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:56:37,402 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:37,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:37,402 INFO L85 PathProgramCache]: Analyzing trace with hash -546397045, now seen corresponding path program 1 times [2021-11-25 18:56:37,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:37,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874452818] [2021-11-25 18:56:37,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:37,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:37,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:37,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874452818] [2021-11-25 18:56:37,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874452818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:37,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:37,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:56:37,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121408533] [2021-11-25 18:56:37,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:37,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:56:37,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:37,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:56:37,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:56:37,599 INFO L87 Difference]: Start difference. First operand 1457 states and 1906 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 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) [2021-11-25 18:56:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:39,198 INFO L93 Difference]: Finished difference Result 2628 states and 3458 transitions. [2021-11-25 18:56:39,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:56:39,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 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 [2021-11-25 18:56:39,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:39,210 INFO L225 Difference]: With dead ends: 2628 [2021-11-25 18:56:39,211 INFO L226 Difference]: Without dead ends: 1890 [2021-11-25 18:56:39,212 INFO L932 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 [2021-11-25 18:56:39,219 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 6524 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6524 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:39,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6524 Valid, 1143 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 18:56:39,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2021-11-25 18:56:39,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1752. [2021-11-25 18:56:39,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1730 states have (on average 1.3739884393063584) internal successors, (2377), 1751 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:39,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 2377 transitions. [2021-11-25 18:56:39,323 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 2377 transitions. Word has length 85 [2021-11-25 18:56:39,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:39,324 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 2377 transitions. [2021-11-25 18:56:39,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 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) [2021-11-25 18:56:39,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 2377 transitions. [2021-11-25 18:56:39,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-25 18:56:39,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:39,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:39,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:56:39,331 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:39,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:39,332 INFO L85 PathProgramCache]: Analyzing trace with hash 326947046, now seen corresponding path program 1 times [2021-11-25 18:56:39,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:39,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494314646] [2021-11-25 18:56:39,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:39,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:39,492 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:39,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494314646] [2021-11-25 18:56:39,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494314646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:39,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:39,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:56:39,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569458763] [2021-11-25 18:56:39,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:39,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:56:39,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:39,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:56:39,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:56:39,495 INFO L87 Difference]: Start difference. First operand 1752 states and 2377 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 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) [2021-11-25 18:56:40,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:40,432 INFO L93 Difference]: Finished difference Result 2441 states and 3305 transitions. [2021-11-25 18:56:40,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:56:40,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 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 [2021-11-25 18:56:40,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:40,442 INFO L225 Difference]: With dead ends: 2441 [2021-11-25 18:56:40,442 INFO L226 Difference]: Without dead ends: 1554 [2021-11-25 18:56:40,444 INFO L932 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 [2021-11-25 18:56:40,447 INFO L933 BasicCegarLoop]: 676 mSDtfsCounter, 4419 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4419 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:40,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4419 Valid, 688 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 18:56:40,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-11-25 18:56:40,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1554. [2021-11-25 18:56:40,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1532 states have (on average 1.3870757180156659) internal successors, (2125), 1553 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:40,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2125 transitions. [2021-11-25 18:56:40,536 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2125 transitions. Word has length 86 [2021-11-25 18:56:40,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:40,536 INFO L470 AbstractCegarLoop]: Abstraction has 1554 states and 2125 transitions. [2021-11-25 18:56:40,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 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) [2021-11-25 18:56:40,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2125 transitions. [2021-11-25 18:56:40,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-25 18:56:40,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:40,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:40,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:56:40,553 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:40,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:40,555 INFO L85 PathProgramCache]: Analyzing trace with hash -379387896, now seen corresponding path program 1 times [2021-11-25 18:56:40,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:40,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555907937] [2021-11-25 18:56:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:40,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:40,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:40,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555907937] [2021-11-25 18:56:40,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555907937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:40,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:40,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:56:40,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135538194] [2021-11-25 18:56:40,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:40,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:56:40,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:40,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:56:40,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:56:40,695 INFO L87 Difference]: Start difference. First operand 1554 states and 2125 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 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) [2021-11-25 18:56:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:41,451 INFO L93 Difference]: Finished difference Result 1956 states and 2626 transitions. [2021-11-25 18:56:41,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:56:41,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 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 [2021-11-25 18:56:41,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:41,459 INFO L225 Difference]: With dead ends: 1956 [2021-11-25 18:56:41,459 INFO L226 Difference]: Without dead ends: 1195 [2021-11-25 18:56:41,460 INFO L932 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 [2021-11-25 18:56:41,461 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 3299 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3299 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:41,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3299 Valid, 547 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:56:41,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2021-11-25 18:56:41,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1195. [2021-11-25 18:56:41,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1173 states have (on average 1.392156862745098) internal successors, (1633), 1194 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1633 transitions. [2021-11-25 18:56:41,610 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1633 transitions. Word has length 87 [2021-11-25 18:56:41,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:41,610 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 1633 transitions. [2021-11-25 18:56:41,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 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) [2021-11-25 18:56:41,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1633 transitions. [2021-11-25 18:56:41,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-25 18:56:41,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:41,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:41,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:56:41,615 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:41,616 INFO L85 PathProgramCache]: Analyzing trace with hash -211366857, now seen corresponding path program 1 times [2021-11-25 18:56:41,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:41,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733391528] [2021-11-25 18:56:41,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:41,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:41,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:41,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733391528] [2021-11-25 18:56:41,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733391528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:41,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:41,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:56:41,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123543801] [2021-11-25 18:56:41,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:41,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:56:41,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:41,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:56:41,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:56:41,738 INFO L87 Difference]: Start difference. First operand 1195 states and 1633 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:42,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:42,286 INFO L93 Difference]: Finished difference Result 1426 states and 1892 transitions. [2021-11-25 18:56:42,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:56:42,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-25 18:56:42,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:42,293 INFO L225 Difference]: With dead ends: 1426 [2021-11-25 18:56:42,293 INFO L226 Difference]: Without dead ends: 842 [2021-11-25 18:56:42,297 INFO L932 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 [2021-11-25 18:56:42,298 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 2226 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:42,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2226 Valid, 425 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:56:42,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-11-25 18:56:42,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 842. [2021-11-25 18:56:42,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3926829268292682) internal successors, (1142), 841 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1142 transitions. [2021-11-25 18:56:42,363 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1142 transitions. Word has length 88 [2021-11-25 18:56:42,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:42,365 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1142 transitions. [2021-11-25 18:56:42,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:42,365 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1142 transitions. [2021-11-25 18:56:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 18:56:42,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:42,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:42,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:56:42,369 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:42,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:42,369 INFO L85 PathProgramCache]: Analyzing trace with hash 328508839, now seen corresponding path program 1 times [2021-11-25 18:56:42,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:42,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352616916] [2021-11-25 18:56:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:42,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:42,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:42,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352616916] [2021-11-25 18:56:42,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352616916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:42,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:42,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:56:42,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990090826] [2021-11-25 18:56:42,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:42,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:56:42,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:42,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:56:42,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:56:42,608 INFO L87 Difference]: Start difference. First operand 842 states and 1142 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:44,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:44,250 INFO L93 Difference]: Finished difference Result 1468 states and 1971 transitions. [2021-11-25 18:56:44,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:56:44,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-11-25 18:56:44,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:44,258 INFO L225 Difference]: With dead ends: 1468 [2021-11-25 18:56:44,258 INFO L226 Difference]: Without dead ends: 1262 [2021-11-25 18:56:44,259 INFO L932 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 [2021-11-25 18:56:44,263 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 2798 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 2188 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2798 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:44,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2798 Valid, 2461 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2188 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 18:56:44,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2021-11-25 18:56:44,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 842. [2021-11-25 18:56:44,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3914634146341462) internal successors, (1141), 841 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:44,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1141 transitions. [2021-11-25 18:56:44,335 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1141 transitions. Word has length 89 [2021-11-25 18:56:44,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:44,335 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1141 transitions. [2021-11-25 18:56:44,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:44,337 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1141 transitions. [2021-11-25 18:56:44,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 18:56:44,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:44,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:44,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:56:44,341 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:44,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:44,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1669555108, now seen corresponding path program 1 times [2021-11-25 18:56:44,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:44,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779475764] [2021-11-25 18:56:44,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:44,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:44,526 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:44,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779475764] [2021-11-25 18:56:44,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779475764] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:44,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:44,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:56:44,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212156332] [2021-11-25 18:56:44,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:44,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:56:44,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:44,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:56:44,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:56:44,529 INFO L87 Difference]: Start difference. First operand 842 states and 1141 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:46,216 INFO L93 Difference]: Finished difference Result 1639 states and 2219 transitions. [2021-11-25 18:56:46,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:56:46,217 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-11-25 18:56:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:46,225 INFO L225 Difference]: With dead ends: 1639 [2021-11-25 18:56:46,226 INFO L226 Difference]: Without dead ends: 1497 [2021-11-25 18:56:46,226 INFO L932 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 [2021-11-25 18:56:46,227 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 2642 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 2410 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2642 SdHoareTripleChecker+Valid, 2927 SdHoareTripleChecker+Invalid, 2434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:46,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2642 Valid, 2927 Invalid, 2434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2410 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 18:56:46,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-11-25 18:56:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 842. [2021-11-25 18:56:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3902439024390243) internal successors, (1140), 841 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:46,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1140 transitions. [2021-11-25 18:56:46,306 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1140 transitions. Word has length 89 [2021-11-25 18:56:46,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:46,306 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1140 transitions. [2021-11-25 18:56:46,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:46,307 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1140 transitions. [2021-11-25 18:56:46,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 18:56:46,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:46,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:46,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:56:46,310 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:46,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:46,310 INFO L85 PathProgramCache]: Analyzing trace with hash 231777635, now seen corresponding path program 1 times [2021-11-25 18:56:46,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:46,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579676778] [2021-11-25 18:56:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:46,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:46,468 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:46,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579676778] [2021-11-25 18:56:46,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579676778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:46,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:46,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:56:46,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123641893] [2021-11-25 18:56:46,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:46,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:56:46,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:46,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:56:46,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:56:46,471 INFO L87 Difference]: Start difference. First operand 842 states and 1140 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:47,422 INFO L93 Difference]: Finished difference Result 1471 states and 1911 transitions. [2021-11-25 18:56:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:56:47,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-11-25 18:56:47,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:47,428 INFO L225 Difference]: With dead ends: 1471 [2021-11-25 18:56:47,429 INFO L226 Difference]: Without dead ends: 1107 [2021-11-25 18:56:47,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:56:47,432 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 3371 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3371 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:47,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3371 Valid, 915 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 18:56:47,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2021-11-25 18:56:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 842. [2021-11-25 18:56:47,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3890243902439023) internal successors, (1139), 841 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:47,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1139 transitions. [2021-11-25 18:56:47,508 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1139 transitions. Word has length 89 [2021-11-25 18:56:47,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:47,508 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1139 transitions. [2021-11-25 18:56:47,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:47,508 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1139 transitions. [2021-11-25 18:56:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 18:56:47,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:47,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:47,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:56:47,514 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:47,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:47,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1427714440, now seen corresponding path program 1 times [2021-11-25 18:56:47,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:47,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471667682] [2021-11-25 18:56:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:47,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:47,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:47,690 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:47,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471667682] [2021-11-25 18:56:47,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471667682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:47,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:47,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:56:47,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987984515] [2021-11-25 18:56:47,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:47,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:56:47,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:47,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:56:47,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:56:47,693 INFO L87 Difference]: Start difference. First operand 842 states and 1139 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:49,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:49,260 INFO L93 Difference]: Finished difference Result 1610 states and 2169 transitions. [2021-11-25 18:56:49,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:56:49,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-25 18:56:49,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:49,271 INFO L225 Difference]: With dead ends: 1610 [2021-11-25 18:56:49,272 INFO L226 Difference]: Without dead ends: 1474 [2021-11-25 18:56:49,273 INFO L932 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 [2021-11-25 18:56:49,273 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 2538 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2538 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:49,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2538 Valid, 2689 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2306 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:56:49,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-11-25 18:56:49,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 842. [2021-11-25 18:56:49,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3865853658536584) internal successors, (1137), 841 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:49,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1137 transitions. [2021-11-25 18:56:49,358 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1137 transitions. Word has length 91 [2021-11-25 18:56:49,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:49,359 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1137 transitions. [2021-11-25 18:56:49,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:49,359 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1137 transitions. [2021-11-25 18:56:49,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 18:56:49,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:49,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:49,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:56:49,362 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:49,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:49,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1221078273, now seen corresponding path program 1 times [2021-11-25 18:56:49,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:49,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489277620] [2021-11-25 18:56:49,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:49,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:49,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:49,499 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:49,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489277620] [2021-11-25 18:56:49,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489277620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:49,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:49,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:56:49,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279007872] [2021-11-25 18:56:49,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:49,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:56:49,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:49,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:56:49,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:56:49,501 INFO L87 Difference]: Start difference. First operand 842 states and 1137 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:50,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:50,959 INFO L93 Difference]: Finished difference Result 1687 states and 2278 transitions. [2021-11-25 18:56:50,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:56:50,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-25 18:56:50,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:50,974 INFO L225 Difference]: With dead ends: 1687 [2021-11-25 18:56:50,975 INFO L226 Difference]: Without dead ends: 1497 [2021-11-25 18:56:50,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:56:50,976 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 1845 mSDsluCounter, 2307 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:50,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1845 Valid, 2948 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 18:56:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-11-25 18:56:51,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 842. [2021-11-25 18:56:51,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3841463414634145) internal successors, (1135), 841 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1135 transitions. [2021-11-25 18:56:51,118 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1135 transitions. Word has length 91 [2021-11-25 18:56:51,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:51,119 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1135 transitions. [2021-11-25 18:56:51,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:51,119 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1135 transitions. [2021-11-25 18:56:51,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 18:56:51,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:51,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:51,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:56:51,122 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:51,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:51,123 INFO L85 PathProgramCache]: Analyzing trace with hash -982216986, now seen corresponding path program 1 times [2021-11-25 18:56:51,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:51,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905513965] [2021-11-25 18:56:51,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:51,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:51,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:51,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905513965] [2021-11-25 18:56:51,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905513965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:51,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:51,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 18:56:51,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951242961] [2021-11-25 18:56:51,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:51,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:56:51,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:51,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:56:51,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:56:51,357 INFO L87 Difference]: Start difference. First operand 842 states and 1135 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:52,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:52,833 INFO L93 Difference]: Finished difference Result 1350 states and 1818 transitions. [2021-11-25 18:56:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 18:56:52,834 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-25 18:56:52,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:52,839 INFO L225 Difference]: With dead ends: 1350 [2021-11-25 18:56:52,839 INFO L226 Difference]: Without dead ends: 1004 [2021-11-25 18:56:52,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:56:52,841 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 2733 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2733 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 2257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:52,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2733 Valid, 2373 Invalid, 2257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 18:56:52,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-11-25 18:56:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 842. [2021-11-25 18:56:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3817073170731706) internal successors, (1133), 841 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1133 transitions. [2021-11-25 18:56:52,927 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1133 transitions. Word has length 91 [2021-11-25 18:56:52,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:52,928 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1133 transitions. [2021-11-25 18:56:52,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1133 transitions. [2021-11-25 18:56:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 18:56:52,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:52,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:52,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 18:56:52,931 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:52,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:52,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1988895487, now seen corresponding path program 1 times [2021-11-25 18:56:52,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:52,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073122418] [2021-11-25 18:56:52,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:52,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:53,175 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:53,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073122418] [2021-11-25 18:56:53,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073122418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:53,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:53,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:56:53,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532223] [2021-11-25 18:56:53,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:53,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:56:53,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:53,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:56:53,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:56:53,178 INFO L87 Difference]: Start difference. First operand 842 states and 1133 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:55,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:55,803 INFO L93 Difference]: Finished difference Result 2173 states and 2918 transitions. [2021-11-25 18:56:55,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:56:55,804 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-25 18:56:55,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:55,814 INFO L225 Difference]: With dead ends: 2173 [2021-11-25 18:56:55,814 INFO L226 Difference]: Without dead ends: 2056 [2021-11-25 18:56:55,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:56:55,816 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 5259 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5259 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 3375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:55,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5259 Valid, 2906 Invalid, 3375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 2812 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-25 18:56:55,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2021-11-25 18:56:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 846. [2021-11-25 18:56:55,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 824 states have (on average 1.3798543689320388) internal successors, (1137), 845 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:55,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1137 transitions. [2021-11-25 18:56:55,925 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1137 transitions. Word has length 91 [2021-11-25 18:56:55,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:55,926 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 1137 transitions. [2021-11-25 18:56:55,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:55,926 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1137 transitions. [2021-11-25 18:56:55,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 18:56:55,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:55,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:55,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 18:56:55,929 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:55,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:55,930 INFO L85 PathProgramCache]: Analyzing trace with hash 646324256, now seen corresponding path program 1 times [2021-11-25 18:56:55,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:55,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077948894] [2021-11-25 18:56:55,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:55,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:56,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:56,059 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:56,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077948894] [2021-11-25 18:56:56,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077948894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:56,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:56,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:56:56,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835865315] [2021-11-25 18:56:56,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:56,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:56:56,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:56,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:56:56,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:56:56,061 INFO L87 Difference]: Start difference. First operand 846 states and 1137 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:57,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:57,635 INFO L93 Difference]: Finished difference Result 1586 states and 2130 transitions. [2021-11-25 18:56:57,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:56:57,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-25 18:56:57,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:57,642 INFO L225 Difference]: With dead ends: 1586 [2021-11-25 18:56:57,643 INFO L226 Difference]: Without dead ends: 1474 [2021-11-25 18:56:57,644 INFO L932 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 [2021-11-25 18:56:57,644 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 2543 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2543 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:57,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2543 Valid, 2802 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:56:57,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-11-25 18:56:57,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 846. [2021-11-25 18:56:57,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 824 states have (on average 1.3786407766990292) internal successors, (1136), 845 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:57,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1136 transitions. [2021-11-25 18:56:57,745 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1136 transitions. Word has length 91 [2021-11-25 18:56:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:57,745 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 1136 transitions. [2021-11-25 18:56:57,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1136 transitions. [2021-11-25 18:56:57,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 18:56:57,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:57,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:57,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 18:56:57,747 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:57,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:57,748 INFO L85 PathProgramCache]: Analyzing trace with hash 850721804, now seen corresponding path program 1 times [2021-11-25 18:56:57,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:57,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074790958] [2021-11-25 18:56:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:57,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:57,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:57,878 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:57,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074790958] [2021-11-25 18:56:57,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074790958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:57,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:57,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:56:57,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192290945] [2021-11-25 18:56:57,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:57,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:56:57,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:57,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:56:57,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:56:57,880 INFO L87 Difference]: Start difference. First operand 846 states and 1136 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:59,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:59,333 INFO L93 Difference]: Finished difference Result 1591 states and 2134 transitions. [2021-11-25 18:56:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:56:59,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-25 18:56:59,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:59,339 INFO L225 Difference]: With dead ends: 1591 [2021-11-25 18:56:59,339 INFO L226 Difference]: Without dead ends: 1474 [2021-11-25 18:56:59,340 INFO L932 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 [2021-11-25 18:56:59,342 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 2515 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2515 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:59,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2515 Valid, 2820 Invalid, 2393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 18:56:59,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-11-25 18:56:59,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 846. [2021-11-25 18:56:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 824 states have (on average 1.3774271844660195) internal successors, (1135), 845 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1135 transitions. [2021-11-25 18:56:59,454 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1135 transitions. Word has length 91 [2021-11-25 18:56:59,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:59,454 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 1135 transitions. [2021-11-25 18:56:59,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:59,455 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1135 transitions. [2021-11-25 18:56:59,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 18:56:59,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:59,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:59,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 18:56:59,458 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:56:59,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:59,458 INFO L85 PathProgramCache]: Analyzing trace with hash 2041192084, now seen corresponding path program 1 times [2021-11-25 18:56:59,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:59,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082470020] [2021-11-25 18:56:59,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:59,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:59,671 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:59,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082470020] [2021-11-25 18:56:59,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082470020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:59,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:59,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:56:59,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693305370] [2021-11-25 18:56:59,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:59,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:56:59,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:59,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:56:59,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:56:59,673 INFO L87 Difference]: Start difference. First operand 846 states and 1135 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:02,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:02,451 INFO L93 Difference]: Finished difference Result 2203 states and 2955 transitions. [2021-11-25 18:57:02,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:57:02,452 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-25 18:57:02,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:02,459 INFO L225 Difference]: With dead ends: 2203 [2021-11-25 18:57:02,459 INFO L226 Difference]: Without dead ends: 2047 [2021-11-25 18:57:02,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:57:02,461 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 4809 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 3241 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4809 SdHoareTripleChecker+Valid, 3527 SdHoareTripleChecker+Invalid, 3706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 3241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:02,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4809 Valid, 3527 Invalid, 3706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 3241 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-25 18:57:02,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2021-11-25 18:57:02,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 850. [2021-11-25 18:57:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3756038647342994) internal successors, (1139), 849 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1139 transitions. [2021-11-25 18:57:02,593 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1139 transitions. Word has length 91 [2021-11-25 18:57:02,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:02,594 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1139 transitions. [2021-11-25 18:57:02,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:02,594 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1139 transitions. [2021-11-25 18:57:02,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-25 18:57:02,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:02,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:02,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 18:57:02,597 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:02,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash 119251772, now seen corresponding path program 1 times [2021-11-25 18:57:02,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:02,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234325675] [2021-11-25 18:57:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:02,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:02,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:02,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:02,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234325675] [2021-11-25 18:57:02,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234325675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:02,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:02,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:02,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362917073] [2021-11-25 18:57:02,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:02,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:02,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:02,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:02,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:02,757 INFO L87 Difference]: Start difference. First operand 850 states and 1139 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:04,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:04,085 INFO L93 Difference]: Finished difference Result 1657 states and 2225 transitions. [2021-11-25 18:57:04,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:04,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-25 18:57:04,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:04,092 INFO L225 Difference]: With dead ends: 1657 [2021-11-25 18:57:04,092 INFO L226 Difference]: Without dead ends: 1501 [2021-11-25 18:57:04,093 INFO L932 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 [2021-11-25 18:57:04,093 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 2621 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2621 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:04,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2621 Valid, 2757 Invalid, 2392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 18:57:04,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2021-11-25 18:57:04,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 846. [2021-11-25 18:57:04,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 824 states have (on average 1.3762135922330097) internal successors, (1134), 845 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1134 transitions. [2021-11-25 18:57:04,213 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1134 transitions. Word has length 92 [2021-11-25 18:57:04,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:04,213 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 1134 transitions. [2021-11-25 18:57:04,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1134 transitions. [2021-11-25 18:57:04,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-25 18:57:04,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:04,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:04,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 18:57:04,216 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:04,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:04,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1082142256, now seen corresponding path program 1 times [2021-11-25 18:57:04,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:04,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341871593] [2021-11-25 18:57:04,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:04,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:04,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:04,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:04,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341871593] [2021-11-25 18:57:04,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341871593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:04,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:04,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:04,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615465602] [2021-11-25 18:57:04,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:04,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:04,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:04,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:04,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:04,344 INFO L87 Difference]: Start difference. First operand 846 states and 1134 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:05,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:05,874 INFO L93 Difference]: Finished difference Result 1591 states and 2131 transitions. [2021-11-25 18:57:05,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:05,874 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-25 18:57:05,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:05,881 INFO L225 Difference]: With dead ends: 1591 [2021-11-25 18:57:05,882 INFO L226 Difference]: Without dead ends: 1474 [2021-11-25 18:57:05,882 INFO L932 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 [2021-11-25 18:57:05,883 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 1897 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 2233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:05,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1897 Valid, 2505 Invalid, 2233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 18:57:05,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-11-25 18:57:06,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 842. [2021-11-25 18:57:06,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3768292682926828) internal successors, (1129), 841 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1129 transitions. [2021-11-25 18:57:06,015 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1129 transitions. Word has length 92 [2021-11-25 18:57:06,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:06,016 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1129 transitions. [2021-11-25 18:57:06,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:06,016 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1129 transitions. [2021-11-25 18:57:06,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:57:06,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:06,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:06,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 18:57:06,019 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:06,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:06,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1474627327, now seen corresponding path program 1 times [2021-11-25 18:57:06,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:06,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612911010] [2021-11-25 18:57:06,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:06,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:06,148 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:06,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612911010] [2021-11-25 18:57:06,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612911010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:06,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:06,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:06,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469929524] [2021-11-25 18:57:06,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:06,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:06,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:06,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:06,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:06,151 INFO L87 Difference]: Start difference. First operand 842 states and 1129 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:07,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:07,580 INFO L93 Difference]: Finished difference Result 1622 states and 2172 transitions. [2021-11-25 18:57:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:57:07,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-25 18:57:07,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:07,601 INFO L225 Difference]: With dead ends: 1622 [2021-11-25 18:57:07,602 INFO L226 Difference]: Without dead ends: 1474 [2021-11-25 18:57:07,603 INFO L932 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 [2021-11-25 18:57:07,603 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 2670 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2670 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 2352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:07,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2670 Valid, 2999 Invalid, 2352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 18:57:07,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-11-25 18:57:07,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 842. [2021-11-25 18:57:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3743902439024391) internal successors, (1127), 841 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1127 transitions. [2021-11-25 18:57:07,723 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1127 transitions. Word has length 93 [2021-11-25 18:57:07,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:07,724 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1127 transitions. [2021-11-25 18:57:07,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:07,724 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1127 transitions. [2021-11-25 18:57:07,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:57:07,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:07,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:07,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 18:57:07,727 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:07,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:07,727 INFO L85 PathProgramCache]: Analyzing trace with hash -281811597, now seen corresponding path program 1 times [2021-11-25 18:57:07,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:07,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097180009] [2021-11-25 18:57:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:07,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:07,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:07,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097180009] [2021-11-25 18:57:07,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097180009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:07,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:07,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:07,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306702833] [2021-11-25 18:57:07,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:07,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:07,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:07,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:07,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:07,855 INFO L87 Difference]: Start difference. First operand 842 states and 1127 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:09,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:09,153 INFO L93 Difference]: Finished difference Result 1564 states and 2083 transitions. [2021-11-25 18:57:09,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:09,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-25 18:57:09,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:09,157 INFO L225 Difference]: With dead ends: 1564 [2021-11-25 18:57:09,158 INFO L226 Difference]: Without dead ends: 1450 [2021-11-25 18:57:09,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:57:09,159 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 2840 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2840 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 2128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:09,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2840 Valid, 2304 Invalid, 2128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 18:57:09,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2021-11-25 18:57:09,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 842. [2021-11-25 18:57:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3719512195121952) internal successors, (1125), 841 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:09,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1125 transitions. [2021-11-25 18:57:09,267 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1125 transitions. Word has length 93 [2021-11-25 18:57:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:09,268 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1125 transitions. [2021-11-25 18:57:09,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:09,268 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1125 transitions. [2021-11-25 18:57:09,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:57:09,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:09,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:09,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 18:57:09,271 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:09,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:09,271 INFO L85 PathProgramCache]: Analyzing trace with hash -610424553, now seen corresponding path program 1 times [2021-11-25 18:57:09,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:09,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236110191] [2021-11-25 18:57:09,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:09,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:09,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:09,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:09,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236110191] [2021-11-25 18:57:09,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236110191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:09,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:09,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:09,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897688021] [2021-11-25 18:57:09,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:09,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:09,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:09,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:09,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:09,392 INFO L87 Difference]: Start difference. First operand 842 states and 1125 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:10,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:10,685 INFO L93 Difference]: Finished difference Result 1719 states and 2299 transitions. [2021-11-25 18:57:10,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:57:10,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-25 18:57:10,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:10,688 INFO L225 Difference]: With dead ends: 1719 [2021-11-25 18:57:10,688 INFO L226 Difference]: Without dead ends: 1497 [2021-11-25 18:57:10,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:57:10,689 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 1864 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:10,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1864 Valid, 3033 Invalid, 2423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 18:57:10,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-11-25 18:57:10,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 842. [2021-11-25 18:57:10,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3695121951219513) internal successors, (1123), 841 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:10,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1123 transitions. [2021-11-25 18:57:10,832 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1123 transitions. Word has length 93 [2021-11-25 18:57:10,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:10,832 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1123 transitions. [2021-11-25 18:57:10,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:10,833 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1123 transitions. [2021-11-25 18:57:10,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:57:10,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:10,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:10,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 18:57:10,835 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:10,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:10,835 INFO L85 PathProgramCache]: Analyzing trace with hash 410318044, now seen corresponding path program 1 times [2021-11-25 18:57:10,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:10,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594299613] [2021-11-25 18:57:10,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:10,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:10,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:10,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594299613] [2021-11-25 18:57:10,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594299613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:10,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:10,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:10,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049868492] [2021-11-25 18:57:10,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:10,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:10,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:10,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:10,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:10,950 INFO L87 Difference]: Start difference. First operand 842 states and 1123 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:12,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:12,279 INFO L93 Difference]: Finished difference Result 1560 states and 2073 transitions. [2021-11-25 18:57:12,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:12,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-25 18:57:12,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:12,281 INFO L225 Difference]: With dead ends: 1560 [2021-11-25 18:57:12,281 INFO L226 Difference]: Without dead ends: 1450 [2021-11-25 18:57:12,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:57:12,283 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 2831 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2831 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:12,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2831 Valid, 2306 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 18:57:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2021-11-25 18:57:12,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 842. [2021-11-25 18:57:12,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3670731707317074) internal successors, (1121), 841 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:12,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1121 transitions. [2021-11-25 18:57:12,382 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1121 transitions. Word has length 93 [2021-11-25 18:57:12,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:12,382 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1121 transitions. [2021-11-25 18:57:12,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:12,383 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1121 transitions. [2021-11-25 18:57:12,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:57:12,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:12,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:12,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 18:57:12,385 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:12,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:12,385 INFO L85 PathProgramCache]: Analyzing trace with hash -603748374, now seen corresponding path program 1 times [2021-11-25 18:57:12,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:12,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770554598] [2021-11-25 18:57:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:12,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:12,586 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:12,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770554598] [2021-11-25 18:57:12,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770554598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:12,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:12,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:57:12,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073316383] [2021-11-25 18:57:12,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:12,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:57:12,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:12,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:57:12,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:57:12,588 INFO L87 Difference]: Start difference. First operand 842 states and 1121 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:15,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:15,112 INFO L93 Difference]: Finished difference Result 2224 states and 2969 transitions. [2021-11-25 18:57:15,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:57:15,112 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-25 18:57:15,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:15,115 INFO L225 Difference]: With dead ends: 2224 [2021-11-25 18:57:15,115 INFO L226 Difference]: Without dead ends: 2088 [2021-11-25 18:57:15,116 INFO L932 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 [2021-11-25 18:57:15,117 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 4587 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 2837 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4587 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:15,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4587 Valid, 3071 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 2837 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:57:15,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2021-11-25 18:57:15,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 850. [2021-11-25 18:57:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3635265700483092) internal successors, (1129), 849 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1129 transitions. [2021-11-25 18:57:15,222 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1129 transitions. Word has length 93 [2021-11-25 18:57:15,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:15,222 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1129 transitions. [2021-11-25 18:57:15,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:15,222 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1129 transitions. [2021-11-25 18:57:15,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:57:15,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:15,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:15,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 18:57:15,224 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:15,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:15,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1361131299, now seen corresponding path program 1 times [2021-11-25 18:57:15,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:15,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365114410] [2021-11-25 18:57:15,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:15,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:15,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:15,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365114410] [2021-11-25 18:57:15,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365114410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:15,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:15,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:57:15,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453747963] [2021-11-25 18:57:15,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:15,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:57:15,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:15,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:57:15,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:57:15,417 INFO L87 Difference]: Start difference. First operand 850 states and 1129 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:17,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:17,962 INFO L93 Difference]: Finished difference Result 2108 states and 2808 transitions. [2021-11-25 18:57:17,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:57:17,962 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-25 18:57:17,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:17,965 INFO L225 Difference]: With dead ends: 2108 [2021-11-25 18:57:17,965 INFO L226 Difference]: Without dead ends: 1998 [2021-11-25 18:57:17,966 INFO L932 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 [2021-11-25 18:57:17,966 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 4869 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4869 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:17,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4869 Valid, 2581 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:57:17,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2021-11-25 18:57:18,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 858. [2021-11-25 18:57:18,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 836 states have (on average 1.3600478468899522) internal successors, (1137), 857 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:18,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1137 transitions. [2021-11-25 18:57:18,093 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1137 transitions. Word has length 93 [2021-11-25 18:57:18,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:18,093 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 1137 transitions. [2021-11-25 18:57:18,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:18,094 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1137 transitions. [2021-11-25 18:57:18,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:57:18,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:18,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:18,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 18:57:18,096 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:18,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:18,097 INFO L85 PathProgramCache]: Analyzing trace with hash 690949312, now seen corresponding path program 1 times [2021-11-25 18:57:18,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:18,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970622571] [2021-11-25 18:57:18,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:18,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:18,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:18,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970622571] [2021-11-25 18:57:18,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970622571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:18,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:18,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:18,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512255438] [2021-11-25 18:57:18,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:18,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:18,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:18,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:18,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:18,213 INFO L87 Difference]: Start difference. First operand 858 states and 1137 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:19,586 INFO L93 Difference]: Finished difference Result 1566 states and 2076 transitions. [2021-11-25 18:57:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:19,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-25 18:57:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:19,589 INFO L225 Difference]: With dead ends: 1566 [2021-11-25 18:57:19,590 INFO L226 Difference]: Without dead ends: 1458 [2021-11-25 18:57:19,590 INFO L932 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 [2021-11-25 18:57:19,591 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 2854 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2854 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:19,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2854 Valid, 2277 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1998 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 18:57:19,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-11-25 18:57:19,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 858. [2021-11-25 18:57:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 836 states have (on average 1.3576555023923444) internal successors, (1135), 857 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:19,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1135 transitions. [2021-11-25 18:57:19,734 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1135 transitions. Word has length 93 [2021-11-25 18:57:19,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:19,734 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 1135 transitions. [2021-11-25 18:57:19,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1135 transitions. [2021-11-25 18:57:19,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:57:19,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:19,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:19,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 18:57:19,737 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:19,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:19,737 INFO L85 PathProgramCache]: Analyzing trace with hash 235260732, now seen corresponding path program 1 times [2021-11-25 18:57:19,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:19,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801217581] [2021-11-25 18:57:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:19,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:19,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:19,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801217581] [2021-11-25 18:57:19,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801217581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:19,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:19,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:57:19,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135444657] [2021-11-25 18:57:19,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:19,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:57:19,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:19,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:57:19,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:57:19,930 INFO L87 Difference]: Start difference. First operand 858 states and 1135 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:22,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:22,594 INFO L93 Difference]: Finished difference Result 2082 states and 2765 transitions. [2021-11-25 18:57:22,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:57:22,594 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-25 18:57:22,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:22,596 INFO L225 Difference]: With dead ends: 2082 [2021-11-25 18:57:22,596 INFO L226 Difference]: Without dead ends: 1978 [2021-11-25 18:57:22,597 INFO L932 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 [2021-11-25 18:57:22,598 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 4822 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 2958 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4822 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 3576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 2958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:22,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4822 Valid, 3097 Invalid, 3576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 2958 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 18:57:22,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2021-11-25 18:57:22,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 862. [2021-11-25 18:57:22,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 840 states have (on average 1.355952380952381) internal successors, (1139), 861 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:22,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1139 transitions. [2021-11-25 18:57:22,743 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1139 transitions. Word has length 93 [2021-11-25 18:57:22,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:22,743 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 1139 transitions. [2021-11-25 18:57:22,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:22,743 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1139 transitions. [2021-11-25 18:57:22,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:57:22,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:22,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:22,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-25 18:57:22,745 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:22,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1312261900, now seen corresponding path program 1 times [2021-11-25 18:57:22,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:22,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334489239] [2021-11-25 18:57:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:22,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:22,858 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:22,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334489239] [2021-11-25 18:57:22,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334489239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:22,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:22,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:22,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597750876] [2021-11-25 18:57:22,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:22,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:22,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:22,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:22,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:22,861 INFO L87 Difference]: Start difference. First operand 862 states and 1139 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:24,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:24,417 INFO L93 Difference]: Finished difference Result 1558 states and 2062 transitions. [2021-11-25 18:57:24,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:24,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-25 18:57:24,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:24,420 INFO L225 Difference]: With dead ends: 1558 [2021-11-25 18:57:24,420 INFO L226 Difference]: Without dead ends: 1458 [2021-11-25 18:57:24,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:57:24,421 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 2807 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 2053 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2807 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:24,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2807 Valid, 2307 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2053 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 18:57:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-11-25 18:57:24,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 862. [2021-11-25 18:57:24,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 840 states have (on average 1.3547619047619048) internal successors, (1138), 861 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:24,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1138 transitions. [2021-11-25 18:57:24,572 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1138 transitions. Word has length 93 [2021-11-25 18:57:24,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:24,573 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 1138 transitions. [2021-11-25 18:57:24,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:24,573 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1138 transitions. [2021-11-25 18:57:24,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:57:24,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:24,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:24,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 18:57:24,576 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:24,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash 297551301, now seen corresponding path program 1 times [2021-11-25 18:57:24,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:24,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565883882] [2021-11-25 18:57:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:24,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:24,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:24,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565883882] [2021-11-25 18:57:24,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565883882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:24,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:24,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:57:24,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062436775] [2021-11-25 18:57:24,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:24,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:57:24,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:24,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:57:24,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:57:24,761 INFO L87 Difference]: Start difference. First operand 862 states and 1138 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:27,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:27,359 INFO L93 Difference]: Finished difference Result 2075 states and 2758 transitions. [2021-11-25 18:57:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:57:27,360 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-25 18:57:27,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:27,363 INFO L225 Difference]: With dead ends: 2075 [2021-11-25 18:57:27,363 INFO L226 Difference]: Without dead ends: 1975 [2021-11-25 18:57:27,365 INFO L932 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 [2021-11-25 18:57:27,365 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 4821 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4821 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 3087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:27,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4821 Valid, 2537 Invalid, 3087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:57:27,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2021-11-25 18:57:27,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 866. [2021-11-25 18:57:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 844 states have (on average 1.353080568720379) internal successors, (1142), 865 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:27,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1142 transitions. [2021-11-25 18:57:27,612 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1142 transitions. Word has length 93 [2021-11-25 18:57:27,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:27,612 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 1142 transitions. [2021-11-25 18:57:27,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:27,612 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1142 transitions. [2021-11-25 18:57:27,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:57:27,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:27,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:27,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-25 18:57:27,615 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:27,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:27,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1532412921, now seen corresponding path program 1 times [2021-11-25 18:57:27,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:27,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77642885] [2021-11-25 18:57:27,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:27,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:27,830 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:27,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77642885] [2021-11-25 18:57:27,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77642885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:27,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:27,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:57:27,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833385151] [2021-11-25 18:57:27,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:27,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:57:27,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:27,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:57:27,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:57:27,832 INFO L87 Difference]: Start difference. First operand 866 states and 1142 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:30,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:30,417 INFO L93 Difference]: Finished difference Result 2083 states and 2765 transitions. [2021-11-25 18:57:30,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:57:30,417 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-25 18:57:30,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:30,420 INFO L225 Difference]: With dead ends: 2083 [2021-11-25 18:57:30,420 INFO L226 Difference]: Without dead ends: 1979 [2021-11-25 18:57:30,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:57:30,421 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 4932 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4932 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:30,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4932 Valid, 2505 Invalid, 3000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 18:57:30,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2021-11-25 18:57:30,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 870. [2021-11-25 18:57:30,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 848 states have (on average 1.3514150943396226) internal successors, (1146), 869 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1146 transitions. [2021-11-25 18:57:30,556 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1146 transitions. Word has length 93 [2021-11-25 18:57:30,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:30,557 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 1146 transitions. [2021-11-25 18:57:30,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:30,557 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1146 transitions. [2021-11-25 18:57:30,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:57:30,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:30,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:30,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 18:57:30,558 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:30,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:30,558 INFO L85 PathProgramCache]: Analyzing trace with hash -170860907, now seen corresponding path program 1 times [2021-11-25 18:57:30,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:30,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807144054] [2021-11-25 18:57:30,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:30,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:30,668 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:30,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807144054] [2021-11-25 18:57:30,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807144054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:30,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:30,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:30,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430825616] [2021-11-25 18:57:30,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:30,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:30,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:30,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:30,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:30,670 INFO L87 Difference]: Start difference. First operand 870 states and 1146 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:32,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:32,014 INFO L93 Difference]: Finished difference Result 1558 states and 2059 transitions. [2021-11-25 18:57:32,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:32,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-25 18:57:32,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:32,018 INFO L225 Difference]: With dead ends: 1558 [2021-11-25 18:57:32,018 INFO L226 Difference]: Without dead ends: 1458 [2021-11-25 18:57:32,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:57:32,020 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 2919 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2919 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:32,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2919 Valid, 2193 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1910 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 18:57:32,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-11-25 18:57:32,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 870. [2021-11-25 18:57:32,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 848 states have (on average 1.3502358490566038) internal successors, (1145), 869 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1145 transitions. [2021-11-25 18:57:32,225 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1145 transitions. Word has length 93 [2021-11-25 18:57:32,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:32,225 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 1145 transitions. [2021-11-25 18:57:32,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1145 transitions. [2021-11-25 18:57:32,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:57:32,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:32,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:32,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 18:57:32,228 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:32,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:32,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1086119729, now seen corresponding path program 1 times [2021-11-25 18:57:32,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:32,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756892203] [2021-11-25 18:57:32,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:32,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:32,419 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:32,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756892203] [2021-11-25 18:57:32,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756892203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:32,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:32,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:57:32,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135657886] [2021-11-25 18:57:32,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:32,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:57:32,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:32,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:57:32,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:57:32,421 INFO L87 Difference]: Start difference. First operand 870 states and 1145 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:35,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:35,074 INFO L93 Difference]: Finished difference Result 2215 states and 2938 transitions. [2021-11-25 18:57:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:57:35,075 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-25 18:57:35,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:35,077 INFO L225 Difference]: With dead ends: 2215 [2021-11-25 18:57:35,077 INFO L226 Difference]: Without dead ends: 2089 [2021-11-25 18:57:35,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:57:35,078 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 5114 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5114 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 3078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:35,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5114 Valid, 2869 Invalid, 3078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:57:35,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2021-11-25 18:57:35,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 874. [2021-11-25 18:57:35,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 852 states have (on average 1.3485915492957747) internal successors, (1149), 873 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1149 transitions. [2021-11-25 18:57:35,279 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1149 transitions. Word has length 93 [2021-11-25 18:57:35,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:35,279 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 1149 transitions. [2021-11-25 18:57:35,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:35,279 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1149 transitions. [2021-11-25 18:57:35,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:57:35,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:35,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:35,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-25 18:57:35,281 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:35,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:35,281 INFO L85 PathProgramCache]: Analyzing trace with hash -960925632, now seen corresponding path program 1 times [2021-11-25 18:57:35,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:35,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949473149] [2021-11-25 18:57:35,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:35,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:35,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:35,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949473149] [2021-11-25 18:57:35,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949473149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:35,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:35,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:35,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758672051] [2021-11-25 18:57:35,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:35,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:35,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:35,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:35,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:35,428 INFO L87 Difference]: Start difference. First operand 874 states and 1149 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:36,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:36,799 INFO L93 Difference]: Finished difference Result 1566 states and 2066 transitions. [2021-11-25 18:57:36,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:36,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-25 18:57:36,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:36,803 INFO L225 Difference]: With dead ends: 1566 [2021-11-25 18:57:36,803 INFO L226 Difference]: Without dead ends: 1462 [2021-11-25 18:57:36,804 INFO L932 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 [2021-11-25 18:57:36,805 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 2928 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 1902 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2928 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:36,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2928 Valid, 2184 Invalid, 1992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1902 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 18:57:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-11-25 18:57:37,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 874. [2021-11-25 18:57:37,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 852 states have (on average 1.3474178403755868) internal successors, (1148), 873 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:37,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1148 transitions. [2021-11-25 18:57:37,002 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1148 transitions. Word has length 93 [2021-11-25 18:57:37,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:37,002 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 1148 transitions. [2021-11-25 18:57:37,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1148 transitions. [2021-11-25 18:57:37,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 18:57:37,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:37,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:37,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-25 18:57:37,004 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:37,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:37,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2080629291, now seen corresponding path program 1 times [2021-11-25 18:57:37,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:37,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899653066] [2021-11-25 18:57:37,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:37,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:37,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:37,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899653066] [2021-11-25 18:57:37,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899653066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:37,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:37,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:37,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776639976] [2021-11-25 18:57:37,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:37,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:37,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:37,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:37,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:37,111 INFO L87 Difference]: Start difference. First operand 874 states and 1148 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:38,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:38,612 INFO L93 Difference]: Finished difference Result 1572 states and 2073 transitions. [2021-11-25 18:57:38,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:38,612 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-25 18:57:38,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:38,614 INFO L225 Difference]: With dead ends: 1572 [2021-11-25 18:57:38,614 INFO L226 Difference]: Without dead ends: 1462 [2021-11-25 18:57:38,615 INFO L932 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 [2021-11-25 18:57:38,615 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 1913 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:38,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1913 Valid, 2255 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 18:57:38,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-11-25 18:57:38,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 866. [2021-11-25 18:57:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 844 states have (on average 1.3483412322274881) internal successors, (1138), 865 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:38,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1138 transitions. [2021-11-25 18:57:38,810 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1138 transitions. Word has length 94 [2021-11-25 18:57:38,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:38,810 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 1138 transitions. [2021-11-25 18:57:38,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:38,810 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1138 transitions. [2021-11-25 18:57:38,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 18:57:38,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:38,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:38,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-25 18:57:38,812 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:38,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:38,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1711046329, now seen corresponding path program 1 times [2021-11-25 18:57:38,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:38,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154078385] [2021-11-25 18:57:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:38,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:38,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:38,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:38,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154078385] [2021-11-25 18:57:38,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154078385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:38,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:38,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:38,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428527892] [2021-11-25 18:57:38,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:38,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:38,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:38,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:38,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:38,919 INFO L87 Difference]: Start difference. First operand 866 states and 1138 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:40,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:40,527 INFO L93 Difference]: Finished difference Result 1626 states and 2147 transitions. [2021-11-25 18:57:40,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:40,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-25 18:57:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:40,529 INFO L225 Difference]: With dead ends: 1626 [2021-11-25 18:57:40,529 INFO L226 Difference]: Without dead ends: 1490 [2021-11-25 18:57:40,529 INFO L932 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 [2021-11-25 18:57:40,530 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 1794 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1794 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 2267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:40,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1794 Valid, 2642 Invalid, 2267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 18:57:40,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-11-25 18:57:40,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 858. [2021-11-25 18:57:40,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 836 states have (on average 1.3492822966507176) internal successors, (1128), 857 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:40,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1128 transitions. [2021-11-25 18:57:40,685 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1128 transitions. Word has length 94 [2021-11-25 18:57:40,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:40,686 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 1128 transitions. [2021-11-25 18:57:40,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:40,686 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1128 transitions. [2021-11-25 18:57:40,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 18:57:40,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:40,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:40,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-25 18:57:40,687 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:40,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:40,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1386870711, now seen corresponding path program 1 times [2021-11-25 18:57:40,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:40,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684991915] [2021-11-25 18:57:40,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:40,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:40,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:40,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684991915] [2021-11-25 18:57:40,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684991915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:40,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:40,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:40,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790540279] [2021-11-25 18:57:40,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:40,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:40,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:40,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:40,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:40,793 INFO L87 Difference]: Start difference. First operand 858 states and 1128 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:42,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:42,377 INFO L93 Difference]: Finished difference Result 1558 states and 2052 transitions. [2021-11-25 18:57:42,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:42,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-25 18:57:42,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:42,379 INFO L225 Difference]: With dead ends: 1558 [2021-11-25 18:57:42,379 INFO L226 Difference]: Without dead ends: 1454 [2021-11-25 18:57:42,380 INFO L932 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 [2021-11-25 18:57:42,380 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 2736 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2736 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:42,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2736 Valid, 2387 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 18:57:42,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2021-11-25 18:57:42,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 854. [2021-11-25 18:57:42,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 832 states have (on average 1.3497596153846154) internal successors, (1123), 853 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1123 transitions. [2021-11-25 18:57:42,522 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1123 transitions. Word has length 94 [2021-11-25 18:57:42,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:42,523 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1123 transitions. [2021-11-25 18:57:42,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:42,523 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1123 transitions. [2021-11-25 18:57:42,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 18:57:42,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:42,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:42,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-25 18:57:42,525 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:42,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:42,525 INFO L85 PathProgramCache]: Analyzing trace with hash -753799877, now seen corresponding path program 1 times [2021-11-25 18:57:42,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:42,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82551199] [2021-11-25 18:57:42,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:42,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:42,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:42,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82551199] [2021-11-25 18:57:42,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82551199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:42,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:42,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:42,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780401916] [2021-11-25 18:57:42,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:42,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:42,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:42,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:42,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:42,632 INFO L87 Difference]: Start difference. First operand 854 states and 1123 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:44,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:44,106 INFO L93 Difference]: Finished difference Result 1554 states and 2048 transitions. [2021-11-25 18:57:44,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:44,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-25 18:57:44,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:44,108 INFO L225 Difference]: With dead ends: 1554 [2021-11-25 18:57:44,108 INFO L226 Difference]: Without dead ends: 1454 [2021-11-25 18:57:44,109 INFO L932 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 [2021-11-25 18:57:44,110 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 1844 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1844 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:44,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1844 Valid, 2405 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 18:57:44,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2021-11-25 18:57:44,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 850. [2021-11-25 18:57:44,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3502415458937198) internal successors, (1118), 849 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:44,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1118 transitions. [2021-11-25 18:57:44,264 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1118 transitions. Word has length 94 [2021-11-25 18:57:44,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:44,264 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1118 transitions. [2021-11-25 18:57:44,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1118 transitions. [2021-11-25 18:57:44,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 18:57:44,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:44,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:44,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-25 18:57:44,266 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:44,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:44,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1553487459, now seen corresponding path program 1 times [2021-11-25 18:57:44,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:44,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121653596] [2021-11-25 18:57:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:44,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:44,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:44,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121653596] [2021-11-25 18:57:44,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121653596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:44,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:44,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:57:44,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166957184] [2021-11-25 18:57:44,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:44,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:57:44,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:44,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:57:44,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:57:44,644 INFO L87 Difference]: Start difference. First operand 850 states and 1118 transitions. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:46,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:46,322 INFO L93 Difference]: Finished difference Result 1767 states and 2343 transitions. [2021-11-25 18:57:46,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:57:46,322 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-25 18:57:46,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:46,325 INFO L225 Difference]: With dead ends: 1767 [2021-11-25 18:57:46,325 INFO L226 Difference]: Without dead ends: 1662 [2021-11-25 18:57:46,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-11-25 18:57:46,326 INFO L933 BasicCegarLoop]: 1151 mSDtfsCounter, 2505 mSDsluCounter, 4634 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2505 SdHoareTripleChecker+Valid, 5681 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:46,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2505 Valid, 5681 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:57:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2021-11-25 18:57:46,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 837. [2021-11-25 18:57:46,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 815 states have (on average 1.347239263803681) internal successors, (1098), 836 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:46,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1098 transitions. [2021-11-25 18:57:46,524 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1098 transitions. Word has length 94 [2021-11-25 18:57:46,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:46,525 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 1098 transitions. [2021-11-25 18:57:46,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:46,525 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1098 transitions. [2021-11-25 18:57:46,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 18:57:46,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:46,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:46,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-25 18:57:46,527 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:46,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:46,528 INFO L85 PathProgramCache]: Analyzing trace with hash 350887970, now seen corresponding path program 1 times [2021-11-25 18:57:46,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:46,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844891848] [2021-11-25 18:57:46,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:46,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:46,636 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:46,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844891848] [2021-11-25 18:57:46,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844891848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:46,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:46,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:46,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339728650] [2021-11-25 18:57:46,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:46,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:46,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:46,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:46,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:46,638 INFO L87 Difference]: Start difference. First operand 837 states and 1098 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:48,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:48,170 INFO L93 Difference]: Finished difference Result 1545 states and 2031 transitions. [2021-11-25 18:57:48,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:48,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-25 18:57:48,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:48,172 INFO L225 Difference]: With dead ends: 1545 [2021-11-25 18:57:48,172 INFO L226 Difference]: Without dead ends: 1441 [2021-11-25 18:57:48,173 INFO L932 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 [2021-11-25 18:57:48,173 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 1782 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:48,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1782 Valid, 2403 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2068 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 18:57:48,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2021-11-25 18:57:48,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 833. [2021-11-25 18:57:48,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 811 states have (on average 1.3477188655980272) internal successors, (1093), 832 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:48,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1093 transitions. [2021-11-25 18:57:48,340 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1093 transitions. Word has length 94 [2021-11-25 18:57:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:48,340 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 1093 transitions. [2021-11-25 18:57:48,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:48,340 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1093 transitions. [2021-11-25 18:57:48,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 18:57:48,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:48,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:48,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-25 18:57:48,343 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:48,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:48,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1902489423, now seen corresponding path program 1 times [2021-11-25 18:57:48,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:48,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528751149] [2021-11-25 18:57:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:48,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:48,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:48,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528751149] [2021-11-25 18:57:48,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528751149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:48,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:48,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:48,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076797523] [2021-11-25 18:57:48,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:48,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:48,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:48,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:48,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:48,458 INFO L87 Difference]: Start difference. First operand 833 states and 1093 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:49,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:49,965 INFO L93 Difference]: Finished difference Result 1587 states and 2091 transitions. [2021-11-25 18:57:49,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:49,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-25 18:57:49,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:49,967 INFO L225 Difference]: With dead ends: 1587 [2021-11-25 18:57:49,967 INFO L226 Difference]: Without dead ends: 1461 [2021-11-25 18:57:49,968 INFO L932 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 [2021-11-25 18:57:49,968 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 1679 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:49,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1679 Valid, 2740 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 18:57:49,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-11-25 18:57:50,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 829. [2021-11-25 18:57:50,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 807 states have (on average 1.3482032218091697) internal successors, (1088), 828 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:50,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1088 transitions. [2021-11-25 18:57:50,122 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1088 transitions. Word has length 94 [2021-11-25 18:57:50,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:50,122 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 1088 transitions. [2021-11-25 18:57:50,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:50,122 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1088 transitions. [2021-11-25 18:57:50,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:57:50,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:50,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:50,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-25 18:57:50,123 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:50,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:50,124 INFO L85 PathProgramCache]: Analyzing trace with hash 296209564, now seen corresponding path program 1 times [2021-11-25 18:57:50,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:50,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298952479] [2021-11-25 18:57:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:50,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:50,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:50,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298952479] [2021-11-25 18:57:50,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298952479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:50,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:50,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:50,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336679719] [2021-11-25 18:57:50,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:50,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:50,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:50,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:50,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:50,250 INFO L87 Difference]: Start difference. First operand 829 states and 1088 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:51,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:51,684 INFO L93 Difference]: Finished difference Result 1553 states and 2040 transitions. [2021-11-25 18:57:51,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:51,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:57:51,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:51,686 INFO L225 Difference]: With dead ends: 1553 [2021-11-25 18:57:51,686 INFO L226 Difference]: Without dead ends: 1437 [2021-11-25 18:57:51,687 INFO L932 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 [2021-11-25 18:57:51,687 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 2720 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2720 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 2006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:51,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2720 Valid, 2409 Invalid, 2006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1920 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 18:57:51,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2021-11-25 18:57:51,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 829. [2021-11-25 18:57:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 807 states have (on average 1.345724907063197) internal successors, (1086), 828 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:51,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1086 transitions. [2021-11-25 18:57:51,844 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1086 transitions. Word has length 95 [2021-11-25 18:57:51,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:51,845 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 1086 transitions. [2021-11-25 18:57:51,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1086 transitions. [2021-11-25 18:57:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:57:51,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:51,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:51,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-25 18:57:51,849 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:51,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:51,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1335545213, now seen corresponding path program 1 times [2021-11-25 18:57:51,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:51,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224716656] [2021-11-25 18:57:51,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:51,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:51,957 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:51,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224716656] [2021-11-25 18:57:51,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224716656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:51,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:51,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:57:51,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997892064] [2021-11-25 18:57:51,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:51,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:57:51,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:51,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:57:51,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:57:51,962 INFO L87 Difference]: Start difference. First operand 829 states and 1086 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:53,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:53,427 INFO L93 Difference]: Finished difference Result 1481 states and 1927 transitions. [2021-11-25 18:57:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:57:53,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:57:53,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:53,429 INFO L225 Difference]: With dead ends: 1481 [2021-11-25 18:57:53,429 INFO L226 Difference]: Without dead ends: 1381 [2021-11-25 18:57:53,430 INFO L932 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 [2021-11-25 18:57:53,430 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 2660 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2660 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:53,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2660 Valid, 2126 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 18:57:53,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2021-11-25 18:57:53,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 829. [2021-11-25 18:57:53,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 807 states have (on average 1.3432465923172243) internal successors, (1084), 828 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:53,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1084 transitions. [2021-11-25 18:57:53,589 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1084 transitions. Word has length 95 [2021-11-25 18:57:53,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:53,589 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 1084 transitions. [2021-11-25 18:57:53,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:53,589 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1084 transitions. [2021-11-25 18:57:53,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:57:53,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:53,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:53,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-25 18:57:53,591 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:53,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:53,591 INFO L85 PathProgramCache]: Analyzing trace with hash -186851275, now seen corresponding path program 1 times [2021-11-25 18:57:53,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:53,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644254972] [2021-11-25 18:57:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:53,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:53,776 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:53,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644254972] [2021-11-25 18:57:53,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644254972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:53,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:53,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:57:53,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269833988] [2021-11-25 18:57:53,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:53,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:57:53,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:53,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:57:53,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:57:53,778 INFO L87 Difference]: Start difference. First operand 829 states and 1084 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:57,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:57,000 INFO L93 Difference]: Finished difference Result 2239 states and 2954 transitions. [2021-11-25 18:57:57,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:57:57,000 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:57:57,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:57,003 INFO L225 Difference]: With dead ends: 2239 [2021-11-25 18:57:57,003 INFO L226 Difference]: Without dead ends: 2083 [2021-11-25 18:57:57,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:57:57,004 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 4433 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4433 SdHoareTripleChecker+Valid, 3024 SdHoareTripleChecker+Invalid, 3186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:57,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4433 Valid, 3024 Invalid, 3186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-25 18:57:57,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2021-11-25 18:57:57,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 837. [2021-11-25 18:57:57,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 815 states have (on average 1.339877300613497) internal successors, (1092), 836 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1092 transitions. [2021-11-25 18:57:57,174 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1092 transitions. Word has length 95 [2021-11-25 18:57:57,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:57,175 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 1092 transitions. [2021-11-25 18:57:57,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:57:57,175 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1092 transitions. [2021-11-25 18:57:57,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:57:57,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:57,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:57,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-25 18:57:57,177 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:57:57,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:57,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1026660038, now seen corresponding path program 1 times [2021-11-25 18:57:57,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:57,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990951846] [2021-11-25 18:57:57,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:57,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:57,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:57:57,379 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:57,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990951846] [2021-11-25 18:57:57,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990951846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:57,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:57,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:57:57,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926069832] [2021-11-25 18:57:57,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:57,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:57:57,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:57,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:57:57,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:57:57,380 INFO L87 Difference]: Start difference. First operand 837 states and 1092 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:00,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:00,449 INFO L93 Difference]: Finished difference Result 2095 states and 2762 transitions. [2021-11-25 18:58:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:58:00,450 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:00,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:00,452 INFO L225 Difference]: With dead ends: 2095 [2021-11-25 18:58:00,452 INFO L226 Difference]: Without dead ends: 1979 [2021-11-25 18:58:00,453 INFO L932 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 [2021-11-25 18:58:00,454 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 4835 mSDsluCounter, 2603 mSDsCounter, 0 mSdLazyCounter, 2834 mSolverCounterSat, 578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4835 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 578 IncrementalHoareTripleChecker+Valid, 2834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:00,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4835 Valid, 3213 Invalid, 3412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 2834 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 18:58:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2021-11-25 18:58:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 845. [2021-11-25 18:58:00,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 823 states have (on average 1.336573511543135) internal successors, (1100), 844 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:00,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1100 transitions. [2021-11-25 18:58:00,678 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1100 transitions. Word has length 95 [2021-11-25 18:58:00,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:00,678 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1100 transitions. [2021-11-25 18:58:00,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:00,679 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1100 transitions. [2021-11-25 18:58:00,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:00,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:00,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:00,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-25 18:58:00,681 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:00,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:00,681 INFO L85 PathProgramCache]: Analyzing trace with hash -605094739, now seen corresponding path program 1 times [2021-11-25 18:58:00,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:00,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187267918] [2021-11-25 18:58:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:00,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:00,789 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:00,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187267918] [2021-11-25 18:58:00,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187267918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:00,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:00,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:58:00,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569680905] [2021-11-25 18:58:00,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:00,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:58:00,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:00,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:58:00,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:58:00,792 INFO L87 Difference]: Start difference. First operand 845 states and 1100 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:02,426 INFO L93 Difference]: Finished difference Result 1497 states and 1941 transitions. [2021-11-25 18:58:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:58:02,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:02,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:02,429 INFO L225 Difference]: With dead ends: 1497 [2021-11-25 18:58:02,429 INFO L226 Difference]: Without dead ends: 1397 [2021-11-25 18:58:02,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:58:02,435 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 2576 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2576 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:02,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2576 Valid, 2184 Invalid, 2092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 18:58:02,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2021-11-25 18:58:02,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 845. [2021-11-25 18:58:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 823 states have (on average 1.3341433778857836) internal successors, (1098), 844 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1098 transitions. [2021-11-25 18:58:02,665 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1098 transitions. Word has length 95 [2021-11-25 18:58:02,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:02,665 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1098 transitions. [2021-11-25 18:58:02,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1098 transitions. [2021-11-25 18:58:02,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:02,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:02,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:02,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-25 18:58:02,666 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:02,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:02,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1892803208, now seen corresponding path program 1 times [2021-11-25 18:58:02,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:02,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627128877] [2021-11-25 18:58:02,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:02,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:02,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:02,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627128877] [2021-11-25 18:58:02,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627128877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:02,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:02,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:58:02,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863322504] [2021-11-25 18:58:02,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:02,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:58:02,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:02,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:58:02,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:58:02,845 INFO L87 Difference]: Start difference. First operand 845 states and 1098 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:05,740 INFO L93 Difference]: Finished difference Result 1967 states and 2572 transitions. [2021-11-25 18:58:05,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:58:05,743 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:05,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:05,745 INFO L225 Difference]: With dead ends: 1967 [2021-11-25 18:58:05,745 INFO L226 Difference]: Without dead ends: 1867 [2021-11-25 18:58:05,746 INFO L932 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 [2021-11-25 18:58:05,746 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 4472 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:05,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4472 Valid, 2607 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:58:05,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2021-11-25 18:58:05,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 853. [2021-11-25 18:58:05,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 831 states have (on average 1.3309265944645006) internal successors, (1106), 852 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1106 transitions. [2021-11-25 18:58:05,938 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1106 transitions. Word has length 95 [2021-11-25 18:58:05,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:05,938 INFO L470 AbstractCegarLoop]: Abstraction has 853 states and 1106 transitions. [2021-11-25 18:58:05,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:05,938 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1106 transitions. [2021-11-25 18:58:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:05,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:05,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:05,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-25 18:58:05,939 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:05,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:05,940 INFO L85 PathProgramCache]: Analyzing trace with hash -174985950, now seen corresponding path program 1 times [2021-11-25 18:58:05,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:05,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240609083] [2021-11-25 18:58:05,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:05,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:06,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:06,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:06,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240609083] [2021-11-25 18:58:06,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240609083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:06,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:06,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:58:06,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985063605] [2021-11-25 18:58:06,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:06,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:58:06,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:06,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:58:06,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:58:06,044 INFO L87 Difference]: Start difference. First operand 853 states and 1106 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:07,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:07,537 INFO L93 Difference]: Finished difference Result 1493 states and 1932 transitions. [2021-11-25 18:58:07,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:58:07,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:07,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:07,539 INFO L225 Difference]: With dead ends: 1493 [2021-11-25 18:58:07,539 INFO L226 Difference]: Without dead ends: 1397 [2021-11-25 18:58:07,539 INFO L932 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 [2021-11-25 18:58:07,540 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 2671 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2671 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:07,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2671 Valid, 2086 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 18:58:07,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2021-11-25 18:58:07,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 853. [2021-11-25 18:58:07,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 831 states have (on average 1.3285198555956679) internal successors, (1104), 852 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1104 transitions. [2021-11-25 18:58:07,770 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1104 transitions. Word has length 95 [2021-11-25 18:58:07,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:07,770 INFO L470 AbstractCegarLoop]: Abstraction has 853 states and 1104 transitions. [2021-11-25 18:58:07,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:07,770 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1104 transitions. [2021-11-25 18:58:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:07,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:07,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:07,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-25 18:58:07,772 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:07,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash 751271791, now seen corresponding path program 1 times [2021-11-25 18:58:07,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:07,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239846676] [2021-11-25 18:58:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:07,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:07,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:07,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239846676] [2021-11-25 18:58:07,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239846676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:07,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:07,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:58:07,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430320498] [2021-11-25 18:58:07,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:07,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:58:07,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:07,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:58:07,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:58:07,952 INFO L87 Difference]: Start difference. First operand 853 states and 1104 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:11,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:11,092 INFO L93 Difference]: Finished difference Result 1997 states and 2614 transitions. [2021-11-25 18:58:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:58:11,092 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:11,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:11,094 INFO L225 Difference]: With dead ends: 1997 [2021-11-25 18:58:11,094 INFO L226 Difference]: Without dead ends: 1980 [2021-11-25 18:58:11,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:58:11,095 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 4544 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4544 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:11,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4544 Valid, 2674 Invalid, 2991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:58:11,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2021-11-25 18:58:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 861. [2021-11-25 18:58:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 839 states have (on average 1.3253873659117998) internal successors, (1112), 860 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:11,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1112 transitions. [2021-11-25 18:58:11,298 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1112 transitions. Word has length 95 [2021-11-25 18:58:11,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:11,299 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1112 transitions. [2021-11-25 18:58:11,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:11,299 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1112 transitions. [2021-11-25 18:58:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:11,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:11,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:11,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-25 18:58:11,300 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:11,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:11,300 INFO L85 PathProgramCache]: Analyzing trace with hash -880482986, now seen corresponding path program 1 times [2021-11-25 18:58:11,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:11,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796320776] [2021-11-25 18:58:11,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:11,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:11,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:11,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796320776] [2021-11-25 18:58:11,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796320776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:11,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:11,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:58:11,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315699949] [2021-11-25 18:58:11,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:11,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:58:11,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:11,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:58:11,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:58:11,404 INFO L87 Difference]: Start difference. First operand 861 states and 1112 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:13,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:13,069 INFO L93 Difference]: Finished difference Result 1410 states and 1814 transitions. [2021-11-25 18:58:13,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:58:13,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:13,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:13,071 INFO L225 Difference]: With dead ends: 1410 [2021-11-25 18:58:13,071 INFO L226 Difference]: Without dead ends: 1405 [2021-11-25 18:58:13,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:58:13,072 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 2660 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2660 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:13,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2660 Valid, 2111 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 18:58:13,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2021-11-25 18:58:13,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 861. [2021-11-25 18:58:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 839 states have (on average 1.3230035756853398) internal successors, (1110), 860 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1110 transitions. [2021-11-25 18:58:13,277 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1110 transitions. Word has length 95 [2021-11-25 18:58:13,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:13,277 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1110 transitions. [2021-11-25 18:58:13,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1110 transitions. [2021-11-25 18:58:13,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:13,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:13,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:13,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-25 18:58:13,278 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:13,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:13,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1948026529, now seen corresponding path program 1 times [2021-11-25 18:58:13,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:13,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444613263] [2021-11-25 18:58:13,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:13,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:13,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:13,453 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:13,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444613263] [2021-11-25 18:58:13,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444613263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:13,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:13,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:58:13,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948945481] [2021-11-25 18:58:13,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:13,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:58:13,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:13,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:58:13,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:58:13,455 INFO L87 Difference]: Start difference. First operand 861 states and 1110 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:16,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:16,615 INFO L93 Difference]: Finished difference Result 1877 states and 2440 transitions. [2021-11-25 18:58:16,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:58:16,616 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:16,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:16,617 INFO L225 Difference]: With dead ends: 1877 [2021-11-25 18:58:16,617 INFO L226 Difference]: Without dead ends: 1872 [2021-11-25 18:58:16,618 INFO L932 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 [2021-11-25 18:58:16,619 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 4432 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4432 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:16,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4432 Valid, 2759 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 2593 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 18:58:16,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2021-11-25 18:58:16,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 869. [2021-11-25 18:58:16,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 847 states have (on average 1.3199527744982291) internal successors, (1118), 868 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1118 transitions. [2021-11-25 18:58:16,860 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1118 transitions. Word has length 95 [2021-11-25 18:58:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:16,861 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1118 transitions. [2021-11-25 18:58:16,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1118 transitions. [2021-11-25 18:58:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:16,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:16,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:16,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-25 18:58:16,862 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:16,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:16,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1836058637, now seen corresponding path program 1 times [2021-11-25 18:58:16,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:16,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692460946] [2021-11-25 18:58:16,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:16,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:16,960 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:16,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692460946] [2021-11-25 18:58:16,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692460946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:16,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:16,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:58:16,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474038513] [2021-11-25 18:58:16,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:16,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:58:16,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:16,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:58:16,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:58:16,962 INFO L87 Difference]: Start difference. First operand 869 states and 1118 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:18,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:18,684 INFO L93 Difference]: Finished difference Result 1501 states and 1934 transitions. [2021-11-25 18:58:18,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:58:18,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:18,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:18,686 INFO L225 Difference]: With dead ends: 1501 [2021-11-25 18:58:18,686 INFO L226 Difference]: Without dead ends: 1405 [2021-11-25 18:58:18,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:58:18,687 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 2672 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2672 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:18,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2672 Valid, 2078 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 18:58:18,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2021-11-25 18:58:18,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 869. [2021-11-25 18:58:18,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 847 states have (on average 1.3175914994096811) internal successors, (1116), 868 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1116 transitions. [2021-11-25 18:58:18,897 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1116 transitions. Word has length 95 [2021-11-25 18:58:18,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:18,897 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1116 transitions. [2021-11-25 18:58:18,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:18,898 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1116 transitions. [2021-11-25 18:58:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:18,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:18,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:18,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-25 18:58:18,899 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:18,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:18,899 INFO L85 PathProgramCache]: Analyzing trace with hash 851489864, now seen corresponding path program 1 times [2021-11-25 18:58:18,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:18,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718896866] [2021-11-25 18:58:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:18,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:19,083 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:19,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718896866] [2021-11-25 18:58:19,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718896866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:19,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:19,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:58:19,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756499601] [2021-11-25 18:58:19,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:19,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:58:19,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:19,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:58:19,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:58:19,085 INFO L87 Difference]: Start difference. First operand 869 states and 1116 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:21,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:21,999 INFO L93 Difference]: Finished difference Result 1877 states and 2436 transitions. [2021-11-25 18:58:21,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:58:22,000 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:22,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:22,001 INFO L225 Difference]: With dead ends: 1877 [2021-11-25 18:58:22,002 INFO L226 Difference]: Without dead ends: 1872 [2021-11-25 18:58:22,002 INFO L932 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 [2021-11-25 18:58:22,002 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 4521 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4521 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:22,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4521 Valid, 2253 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 18:58:22,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2021-11-25 18:58:22,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 877. [2021-11-25 18:58:22,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 855 states have (on average 1.3146198830409357) internal successors, (1124), 876 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1124 transitions. [2021-11-25 18:58:22,221 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1124 transitions. Word has length 95 [2021-11-25 18:58:22,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:22,221 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1124 transitions. [2021-11-25 18:58:22,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:22,222 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1124 transitions. [2021-11-25 18:58:22,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:22,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:22,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:22,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-25 18:58:22,223 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:22,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:22,224 INFO L85 PathProgramCache]: Analyzing trace with hash 740784075, now seen corresponding path program 1 times [2021-11-25 18:58:22,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:22,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977497744] [2021-11-25 18:58:22,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:22,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:22,325 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:22,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977497744] [2021-11-25 18:58:22,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977497744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:22,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:22,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:58:22,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68442535] [2021-11-25 18:58:22,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:22,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:58:22,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:22,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:58:22,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:58:22,327 INFO L87 Difference]: Start difference. First operand 877 states and 1124 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:23,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:23,940 INFO L93 Difference]: Finished difference Result 1501 states and 1930 transitions. [2021-11-25 18:58:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:58:23,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:23,942 INFO L225 Difference]: With dead ends: 1501 [2021-11-25 18:58:23,942 INFO L226 Difference]: Without dead ends: 1405 [2021-11-25 18:58:23,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:58:23,943 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 2588 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2588 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 2046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:23,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2588 Valid, 2140 Invalid, 2046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 18:58:23,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2021-11-25 18:58:24,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 877. [2021-11-25 18:58:24,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 855 states have (on average 1.312280701754386) internal successors, (1122), 876 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1122 transitions. [2021-11-25 18:58:24,158 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1122 transitions. Word has length 95 [2021-11-25 18:58:24,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:24,158 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1122 transitions. [2021-11-25 18:58:24,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:24,159 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1122 transitions. [2021-11-25 18:58:24,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:24,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:24,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:24,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-25 18:58:24,160 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:24,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:24,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1797536421, now seen corresponding path program 1 times [2021-11-25 18:58:24,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:24,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484935122] [2021-11-25 18:58:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:24,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:24,338 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:24,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484935122] [2021-11-25 18:58:24,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484935122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:24,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:24,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:58:24,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365245197] [2021-11-25 18:58:24,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:24,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:58:24,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:24,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:58:24,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:58:24,340 INFO L87 Difference]: Start difference. First operand 877 states and 1122 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:27,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:27,407 INFO L93 Difference]: Finished difference Result 1979 states and 2574 transitions. [2021-11-25 18:58:27,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:58:27,408 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:27,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:27,409 INFO L225 Difference]: With dead ends: 1979 [2021-11-25 18:58:27,409 INFO L226 Difference]: Without dead ends: 1883 [2021-11-25 18:58:27,410 INFO L932 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 [2021-11-25 18:58:27,410 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 4472 mSDsluCounter, 2206 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 737 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:27,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4472 Valid, 2717 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [737 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:58:27,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2021-11-25 18:58:27,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 885. [2021-11-25 18:58:27,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 863 states have (on average 1.309385863267671) internal successors, (1130), 884 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1130 transitions. [2021-11-25 18:58:27,686 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1130 transitions. Word has length 95 [2021-11-25 18:58:27,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:27,686 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1130 transitions. [2021-11-25 18:58:27,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:27,686 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1130 transitions. [2021-11-25 18:58:27,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:27,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:27,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:27,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-25 18:58:27,688 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:27,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:27,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1975449778, now seen corresponding path program 1 times [2021-11-25 18:58:27,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:27,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223389244] [2021-11-25 18:58:27,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:27,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:27,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:27,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223389244] [2021-11-25 18:58:27,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223389244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:27,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:27,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:58:27,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574309297] [2021-11-25 18:58:27,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:27,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:58:27,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:27,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:58:27,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:58:27,782 INFO L87 Difference]: Start difference. First operand 885 states and 1130 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:29,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:29,389 INFO L93 Difference]: Finished difference Result 1499 states and 1924 transitions. [2021-11-25 18:58:29,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:58:29,389 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:29,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:29,390 INFO L225 Difference]: With dead ends: 1499 [2021-11-25 18:58:29,390 INFO L226 Difference]: Without dead ends: 1405 [2021-11-25 18:58:29,391 INFO L932 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 [2021-11-25 18:58:29,392 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 2590 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2590 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:29,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2590 Valid, 2136 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 18:58:29,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2021-11-25 18:58:29,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 885. [2021-11-25 18:58:29,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 863 states have (on average 1.3082271147161066) internal successors, (1129), 884 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1129 transitions. [2021-11-25 18:58:29,619 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1129 transitions. Word has length 95 [2021-11-25 18:58:29,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:29,619 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1129 transitions. [2021-11-25 18:58:29,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:29,620 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1129 transitions. [2021-11-25 18:58:29,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:29,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:29,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:29,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-25 18:58:29,621 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:29,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:29,621 INFO L85 PathProgramCache]: Analyzing trace with hash 305613409, now seen corresponding path program 1 times [2021-11-25 18:58:29,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:29,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329207522] [2021-11-25 18:58:29,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:29,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:29,798 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:29,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329207522] [2021-11-25 18:58:29,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329207522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:29,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:29,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:58:29,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159101894] [2021-11-25 18:58:29,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:29,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:58:29,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:29,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:58:29,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:58:29,801 INFO L87 Difference]: Start difference. First operand 885 states and 1129 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:32,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:32,910 INFO L93 Difference]: Finished difference Result 1869 states and 2417 transitions. [2021-11-25 18:58:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:58:32,911 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:32,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:32,912 INFO L225 Difference]: With dead ends: 1869 [2021-11-25 18:58:32,912 INFO L226 Difference]: Without dead ends: 1864 [2021-11-25 18:58:32,913 INFO L932 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 [2021-11-25 18:58:32,913 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 4257 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 2661 mSolverCounterSat, 733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 2661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:32,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4257 Valid, 2800 Invalid, 3394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [733 Valid, 2661 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:58:32,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-11-25 18:58:33,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 889. [2021-11-25 18:58:33,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 867 states have (on average 1.3068050749711648) internal successors, (1133), 888 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:33,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1133 transitions. [2021-11-25 18:58:33,160 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1133 transitions. Word has length 95 [2021-11-25 18:58:33,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:33,160 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1133 transitions. [2021-11-25 18:58:33,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:33,160 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1133 transitions. [2021-11-25 18:58:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:33,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:33,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:33,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-25 18:58:33,161 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:33,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:33,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1201045575, now seen corresponding path program 1 times [2021-11-25 18:58:33,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:33,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577141137] [2021-11-25 18:58:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:33,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:33,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:33,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577141137] [2021-11-25 18:58:33,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577141137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:33,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:33,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:58:33,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790227176] [2021-11-25 18:58:33,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:33,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:58:33,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:33,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:58:33,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:58:33,333 INFO L87 Difference]: Start difference. First operand 889 states and 1133 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:36,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:36,602 INFO L93 Difference]: Finished difference Result 1961 states and 2545 transitions. [2021-11-25 18:58:36,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:58:36,602 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:36,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:36,604 INFO L225 Difference]: With dead ends: 1961 [2021-11-25 18:58:36,604 INFO L226 Difference]: Without dead ends: 1867 [2021-11-25 18:58:36,604 INFO L932 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 [2021-11-25 18:58:36,605 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 4259 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 2650 mSolverCounterSat, 737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4259 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 3387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 737 IncrementalHoareTripleChecker+Valid, 2650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:36,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4259 Valid, 2786 Invalid, 3387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [737 Valid, 2650 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 18:58:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2021-11-25 18:58:36,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 893. [2021-11-25 18:58:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 871 states have (on average 1.3053960964408726) internal successors, (1137), 892 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1137 transitions. [2021-11-25 18:58:36,839 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1137 transitions. Word has length 95 [2021-11-25 18:58:36,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:36,839 INFO L470 AbstractCegarLoop]: Abstraction has 893 states and 1137 transitions. [2021-11-25 18:58:36,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:36,839 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1137 transitions. [2021-11-25 18:58:36,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:36,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:36,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:36,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-25 18:58:36,841 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:36,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:36,841 INFO L85 PathProgramCache]: Analyzing trace with hash -189923424, now seen corresponding path program 1 times [2021-11-25 18:58:36,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:36,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539731068] [2021-11-25 18:58:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:36,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:37,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:37,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:37,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539731068] [2021-11-25 18:58:37,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539731068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:37,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:37,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:58:37,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808456798] [2021-11-25 18:58:37,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:37,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:58:37,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:58:37,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:58:37,021 INFO L87 Difference]: Start difference. First operand 893 states and 1137 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:40,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:40,344 INFO L93 Difference]: Finished difference Result 1961 states and 2544 transitions. [2021-11-25 18:58:40,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:58:40,344 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:40,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:40,346 INFO L225 Difference]: With dead ends: 1961 [2021-11-25 18:58:40,346 INFO L226 Difference]: Without dead ends: 1867 [2021-11-25 18:58:40,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:58:40,347 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 4361 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4361 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:40,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4361 Valid, 2269 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 18:58:40,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2021-11-25 18:58:40,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 897. [2021-11-25 18:58:40,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 875 states have (on average 1.304) internal successors, (1141), 896 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1141 transitions. [2021-11-25 18:58:40,602 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1141 transitions. Word has length 95 [2021-11-25 18:58:40,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:40,602 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1141 transitions. [2021-11-25 18:58:40,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1141 transitions. [2021-11-25 18:58:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:40,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:40,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:40,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-25 18:58:40,604 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:40,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1916605268, now seen corresponding path program 1 times [2021-11-25 18:58:40,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:40,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873570846] [2021-11-25 18:58:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:40,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:40,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:40,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873570846] [2021-11-25 18:58:40,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873570846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:40,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:40,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:58:40,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358057427] [2021-11-25 18:58:40,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:40,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:58:40,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:40,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:58:40,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:58:40,780 INFO L87 Difference]: Start difference. First operand 897 states and 1141 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:43,845 INFO L93 Difference]: Finished difference Result 1961 states and 2540 transitions. [2021-11-25 18:58:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:58:43,845 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:43,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:43,846 INFO L225 Difference]: With dead ends: 1961 [2021-11-25 18:58:43,847 INFO L226 Difference]: Without dead ends: 1864 [2021-11-25 18:58:43,847 INFO L932 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 [2021-11-25 18:58:43,847 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 4511 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 754 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4511 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:43,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4511 Valid, 2227 Invalid, 2789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:58:43,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-11-25 18:58:44,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 901. [2021-11-25 18:58:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.3026166097838452) internal successors, (1145), 900 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1145 transitions. [2021-11-25 18:58:44,100 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1145 transitions. Word has length 95 [2021-11-25 18:58:44,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:44,100 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1145 transitions. [2021-11-25 18:58:44,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1145 transitions. [2021-11-25 18:58:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:44,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:44,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:44,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-25 18:58:44,102 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:44,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:44,102 INFO L85 PathProgramCache]: Analyzing trace with hash -249249413, now seen corresponding path program 1 times [2021-11-25 18:58:44,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:44,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047311632] [2021-11-25 18:58:44,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:44,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:44,199 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:44,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047311632] [2021-11-25 18:58:44,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047311632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:44,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:44,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:58:44,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071140316] [2021-11-25 18:58:44,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:44,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:58:44,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:44,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:58:44,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:58:44,202 INFO L87 Difference]: Start difference. First operand 901 states and 1145 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:45,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:45,883 INFO L93 Difference]: Finished difference Result 1499 states and 1919 transitions. [2021-11-25 18:58:45,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:58:45,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:45,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:45,885 INFO L225 Difference]: With dead ends: 1499 [2021-11-25 18:58:45,885 INFO L226 Difference]: Without dead ends: 1405 [2021-11-25 18:58:45,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:58:45,886 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 2614 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:45,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2614 Valid, 2096 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 18:58:45,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2021-11-25 18:58:46,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 901. [2021-11-25 18:58:46,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 879 states have (on average 1.3014789533560864) internal successors, (1144), 900 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:46,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1144 transitions. [2021-11-25 18:58:46,131 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1144 transitions. Word has length 95 [2021-11-25 18:58:46,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:46,131 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1144 transitions. [2021-11-25 18:58:46,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:46,131 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1144 transitions. [2021-11-25 18:58:46,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:46,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:46,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:46,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-25 18:58:46,133 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:46,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:46,133 INFO L85 PathProgramCache]: Analyzing trace with hash 222607760, now seen corresponding path program 1 times [2021-11-25 18:58:46,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:46,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764407759] [2021-11-25 18:58:46,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:46,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:46,295 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:46,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764407759] [2021-11-25 18:58:46,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764407759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:46,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:46,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:58:46,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166635705] [2021-11-25 18:58:46,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:46,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:58:46,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:46,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:58:46,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:58:46,296 INFO L87 Difference]: Start difference. First operand 901 states and 1144 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:49,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:49,466 INFO L93 Difference]: Finished difference Result 1962 states and 2542 transitions. [2021-11-25 18:58:49,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:58:49,467 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:49,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:49,468 INFO L225 Difference]: With dead ends: 1962 [2021-11-25 18:58:49,468 INFO L226 Difference]: Without dead ends: 1868 [2021-11-25 18:58:49,469 INFO L932 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 [2021-11-25 18:58:49,469 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 4467 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4467 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:49,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4467 Valid, 2681 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [760 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:58:49,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-11-25 18:58:49,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 905. [2021-11-25 18:58:49,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 883 states have (on average 1.3001132502831256) internal successors, (1148), 904 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:49,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1148 transitions. [2021-11-25 18:58:49,734 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1148 transitions. Word has length 95 [2021-11-25 18:58:49,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:49,735 INFO L470 AbstractCegarLoop]: Abstraction has 905 states and 1148 transitions. [2021-11-25 18:58:49,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:49,735 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1148 transitions. [2021-11-25 18:58:49,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 18:58:49,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:49,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:49,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-25 18:58:49,737 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:49,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:49,738 INFO L85 PathProgramCache]: Analyzing trace with hash 835136940, now seen corresponding path program 1 times [2021-11-25 18:58:49,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:49,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75918990] [2021-11-25 18:58:49,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:49,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:49,993 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:49,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75918990] [2021-11-25 18:58:49,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75918990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:49,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:49,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:58:49,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63645884] [2021-11-25 18:58:49,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:49,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:58:49,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:49,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:58:49,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:58:49,995 INFO L87 Difference]: Start difference. First operand 905 states and 1148 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:51,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:51,377 INFO L93 Difference]: Finished difference Result 1437 states and 1750 transitions. [2021-11-25 18:58:51,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:58:51,377 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-25 18:58:51,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:51,378 INFO L225 Difference]: With dead ends: 1437 [2021-11-25 18:58:51,378 INFO L226 Difference]: Without dead ends: 1126 [2021-11-25 18:58:51,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-11-25 18:58:51,380 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 2951 mSDsluCounter, 2982 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2951 SdHoareTripleChecker+Valid, 3719 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:51,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2951 Valid, 3719 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:58:51,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2021-11-25 18:58:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 686. [2021-11-25 18:58:51,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 670 states have (on average 1.291044776119403) internal successors, (865), 685 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 865 transitions. [2021-11-25 18:58:51,617 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 865 transitions. Word has length 95 [2021-11-25 18:58:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:51,617 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 865 transitions. [2021-11-25 18:58:51,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 865 transitions. [2021-11-25 18:58:51,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 18:58:51,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:51,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:51,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-25 18:58:51,618 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:51,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:51,618 INFO L85 PathProgramCache]: Analyzing trace with hash 977526231, now seen corresponding path program 1 times [2021-11-25 18:58:51,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:51,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762382670] [2021-11-25 18:58:51,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:51,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:51,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:51,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762382670] [2021-11-25 18:58:51,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762382670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:51,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:51,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:58:51,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992389586] [2021-11-25 18:58:51,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:51,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:58:51,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:51,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:58:51,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:58:51,723 INFO L87 Difference]: Start difference. First operand 686 states and 865 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:53,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:53,080 INFO L93 Difference]: Finished difference Result 1222 states and 1563 transitions. [2021-11-25 18:58:53,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:58:53,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-25 18:58:53,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:53,082 INFO L225 Difference]: With dead ends: 1222 [2021-11-25 18:58:53,082 INFO L226 Difference]: Without dead ends: 1122 [2021-11-25 18:58:53,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:58:53,083 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1750 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:53,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1750 Valid, 1408 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:58:53,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2021-11-25 18:58:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 678. [2021-11-25 18:58:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 662 states have (on average 1.2915407854984895) internal successors, (855), 677 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 855 transitions. [2021-11-25 18:58:53,316 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 855 transitions. Word has length 96 [2021-11-25 18:58:53,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:53,316 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 855 transitions. [2021-11-25 18:58:53,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 855 transitions. [2021-11-25 18:58:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 18:58:53,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:53,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:53,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-25 18:58:53,318 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:53,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:53,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2102961090, now seen corresponding path program 1 times [2021-11-25 18:58:53,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:53,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354059870] [2021-11-25 18:58:53,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:53,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:53,423 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:53,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354059870] [2021-11-25 18:58:53,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354059870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:53,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:53,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:58:53,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483657510] [2021-11-25 18:58:53,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:53,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:58:53,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:53,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:58:53,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:58:53,425 INFO L87 Difference]: Start difference. First operand 678 states and 855 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:54,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:54,857 INFO L93 Difference]: Finished difference Result 1286 states and 1650 transitions. [2021-11-25 18:58:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:58:54,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-25 18:58:54,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:54,859 INFO L225 Difference]: With dead ends: 1286 [2021-11-25 18:58:54,859 INFO L226 Difference]: Without dead ends: 1170 [2021-11-25 18:58:54,859 INFO L932 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 [2021-11-25 18:58:54,859 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 1743 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:54,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1743 Valid, 1521 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:58:54,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2021-11-25 18:58:55,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 670. [2021-11-25 18:58:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 654 states have (on average 1.2920489296636086) internal successors, (845), 669 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:55,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 845 transitions. [2021-11-25 18:58:55,095 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 845 transitions. Word has length 96 [2021-11-25 18:58:55,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:55,095 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 845 transitions. [2021-11-25 18:58:55,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:55,095 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 845 transitions. [2021-11-25 18:58:55,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 18:58:55,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:55,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:55,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-25 18:58:55,097 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:55,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1106914618, now seen corresponding path program 1 times [2021-11-25 18:58:55,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:55,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493112724] [2021-11-25 18:58:55,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:55,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:55,178 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:55,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493112724] [2021-11-25 18:58:55,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493112724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:55,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:55,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:58:55,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192687666] [2021-11-25 18:58:55,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:55,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:58:55,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:55,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:58:55,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:58:55,181 INFO L87 Difference]: Start difference. First operand 670 states and 845 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:56,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:56,521 INFO L93 Difference]: Finished difference Result 1350 states and 1733 transitions. [2021-11-25 18:58:56,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:58:56,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-25 18:58:56,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:56,522 INFO L225 Difference]: With dead ends: 1350 [2021-11-25 18:58:56,522 INFO L226 Difference]: Without dead ends: 1194 [2021-11-25 18:58:56,523 INFO L932 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 [2021-11-25 18:58:56,523 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 1184 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:56,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1184 Valid, 1683 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:58:56,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-11-25 18:58:56,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 662. [2021-11-25 18:58:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 646 states have (on average 1.2925696594427245) internal successors, (835), 661 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:56,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 835 transitions. [2021-11-25 18:58:56,759 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 835 transitions. Word has length 96 [2021-11-25 18:58:56,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:56,759 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 835 transitions. [2021-11-25 18:58:56,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:56,760 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 835 transitions. [2021-11-25 18:58:56,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 18:58:56,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:56,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:56,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-25 18:58:56,761 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:56,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:56,761 INFO L85 PathProgramCache]: Analyzing trace with hash 593507918, now seen corresponding path program 1 times [2021-11-25 18:58:56,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:56,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38732374] [2021-11-25 18:58:56,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:56,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:56,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:56,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38732374] [2021-11-25 18:58:56,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38732374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:56,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:56,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:58:56,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239767501] [2021-11-25 18:58:56,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:56,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:58:56,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:56,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:58:56,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:58:56,858 INFO L87 Difference]: Start difference. First operand 662 states and 835 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:58,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:58,223 INFO L93 Difference]: Finished difference Result 1111 states and 1412 transitions. [2021-11-25 18:58:58,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:58:58,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-25 18:58:58,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:58,224 INFO L225 Difference]: With dead ends: 1111 [2021-11-25 18:58:58,224 INFO L226 Difference]: Without dead ends: 1106 [2021-11-25 18:58:58,225 INFO L932 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 [2021-11-25 18:58:58,225 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1685 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:58,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1685 Valid, 1478 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:58:58,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-11-25 18:58:58,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 654. [2021-11-25 18:58:58,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 638 states have (on average 1.293103448275862) internal successors, (825), 653 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:58,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 825 transitions. [2021-11-25 18:58:58,454 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 825 transitions. Word has length 96 [2021-11-25 18:58:58,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:58,455 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 825 transitions. [2021-11-25 18:58:58,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:58,455 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 825 transitions. [2021-11-25 18:58:58,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 18:58:58,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:58,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:58,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-25 18:58:58,456 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:58:58,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:58,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1986737205, now seen corresponding path program 1 times [2021-11-25 18:58:58,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:58,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568411620] [2021-11-25 18:58:58,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:58,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:58:58,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:58,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568411620] [2021-11-25 18:58:58,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568411620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:58,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:58,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:58:58,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198390994] [2021-11-25 18:58:58,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:58,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:58:58,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:58,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:58:58,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:58:58,584 INFO L87 Difference]: Start difference. First operand 654 states and 825 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:59,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:59,952 INFO L93 Difference]: Finished difference Result 1171 states and 1492 transitions. [2021-11-25 18:58:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:58:59,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-25 18:58:59,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:59,954 INFO L225 Difference]: With dead ends: 1171 [2021-11-25 18:58:59,954 INFO L226 Difference]: Without dead ends: 1154 [2021-11-25 18:58:59,954 INFO L932 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 [2021-11-25 18:58:59,955 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 1109 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:59,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 1701 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:58:59,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2021-11-25 18:59:00,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 646. [2021-11-25 18:59:00,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 630 states have (on average 1.2936507936507937) internal successors, (815), 645 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:00,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 815 transitions. [2021-11-25 18:59:00,188 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 815 transitions. Word has length 96 [2021-11-25 18:59:00,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:00,188 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 815 transitions. [2021-11-25 18:59:00,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 815 transitions. [2021-11-25 18:59:00,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 18:59:00,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:00,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:00,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-25 18:59:00,190 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:00,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:00,190 INFO L85 PathProgramCache]: Analyzing trace with hash 960608400, now seen corresponding path program 1 times [2021-11-25 18:59:00,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:00,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215095381] [2021-11-25 18:59:00,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:00,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:00,287 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:00,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215095381] [2021-11-25 18:59:00,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215095381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:00,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:00,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:59:00,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969181088] [2021-11-25 18:59:00,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:00,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:59:00,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:00,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:59:00,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:59:00,288 INFO L87 Difference]: Start difference. First operand 646 states and 815 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:01,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:01,624 INFO L93 Difference]: Finished difference Result 1103 states and 1400 transitions. [2021-11-25 18:59:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:59:01,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-25 18:59:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:01,625 INFO L225 Difference]: With dead ends: 1103 [2021-11-25 18:59:01,625 INFO L226 Difference]: Without dead ends: 1098 [2021-11-25 18:59:01,626 INFO L932 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 [2021-11-25 18:59:01,626 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 1635 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:01,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1635 Valid, 1538 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:59:01,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2021-11-25 18:59:01,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 638. [2021-11-25 18:59:01,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.2942122186495177) internal successors, (805), 637 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 805 transitions. [2021-11-25 18:59:01,855 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 805 transitions. Word has length 96 [2021-11-25 18:59:01,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:01,855 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 805 transitions. [2021-11-25 18:59:01,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:01,855 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 805 transitions. [2021-11-25 18:59:01,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 18:59:01,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:01,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:01,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-25 18:59:01,856 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:01,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:01,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1380049275, now seen corresponding path program 1 times [2021-11-25 18:59:01,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:01,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593184738] [2021-11-25 18:59:01,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:01,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:01,946 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:01,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593184738] [2021-11-25 18:59:01,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593184738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:01,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:01,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:59:01,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940485460] [2021-11-25 18:59:01,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:01,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:59:01,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:01,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:59:01,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:59:01,948 INFO L87 Difference]: Start difference. First operand 638 states and 805 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:03,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:03,319 INFO L93 Difference]: Finished difference Result 1190 states and 1518 transitions. [2021-11-25 18:59:03,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:59:03,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-25 18:59:03,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:03,320 INFO L225 Difference]: With dead ends: 1190 [2021-11-25 18:59:03,320 INFO L226 Difference]: Without dead ends: 1096 [2021-11-25 18:59:03,321 INFO L932 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 [2021-11-25 18:59:03,321 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 1684 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:03,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 1479 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:59:03,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-11-25 18:59:03,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 636. [2021-11-25 18:59:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 620 states have (on average 1.2919354838709678) internal successors, (801), 635 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 801 transitions. [2021-11-25 18:59:03,542 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 801 transitions. Word has length 96 [2021-11-25 18:59:03,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:03,542 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 801 transitions. [2021-11-25 18:59:03,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:03,543 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 801 transitions. [2021-11-25 18:59:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 18:59:03,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:03,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:03,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-25 18:59:03,545 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:03,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:03,545 INFO L85 PathProgramCache]: Analyzing trace with hash -534826916, now seen corresponding path program 1 times [2021-11-25 18:59:03,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:03,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100098561] [2021-11-25 18:59:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:03,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:03,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:03,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:03,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100098561] [2021-11-25 18:59:03,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100098561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:03,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:03,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:59:03,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227474366] [2021-11-25 18:59:03,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:03,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:59:03,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:03,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:59:03,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:59:03,634 INFO L87 Difference]: Start difference. First operand 636 states and 801 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:04,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:04,987 INFO L93 Difference]: Finished difference Result 1192 states and 1518 transitions. [2021-11-25 18:59:04,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:59:04,987 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-25 18:59:04,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:04,988 INFO L225 Difference]: With dead ends: 1192 [2021-11-25 18:59:04,988 INFO L226 Difference]: Without dead ends: 1096 [2021-11-25 18:59:04,989 INFO L932 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 [2021-11-25 18:59:04,989 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 1638 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:04,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1638 Valid, 1540 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:59:04,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-11-25 18:59:05,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 628. [2021-11-25 18:59:05,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 612 states have (on average 1.292483660130719) internal successors, (791), 627 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 791 transitions. [2021-11-25 18:59:05,236 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 791 transitions. Word has length 96 [2021-11-25 18:59:05,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:05,236 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 791 transitions. [2021-11-25 18:59:05,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:05,237 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 791 transitions. [2021-11-25 18:59:05,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 18:59:05,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:05,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:05,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-25 18:59:05,238 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:05,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:05,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1212843376, now seen corresponding path program 1 times [2021-11-25 18:59:05,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:05,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286948485] [2021-11-25 18:59:05,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:05,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:06,653 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:06,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286948485] [2021-11-25 18:59:06,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286948485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:06,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:06,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-11-25 18:59:06,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69497579] [2021-11-25 18:59:06,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:06,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-25 18:59:06,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:06,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-25 18:59:06,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 18:59:06,656 INFO L87 Difference]: Start difference. First operand 628 states and 791 transitions. Second operand has 34 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 33 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:11,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:11,506 INFO L93 Difference]: Finished difference Result 776 states and 979 transitions. [2021-11-25 18:59:11,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-25 18:59:11,507 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 33 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-25 18:59:11,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:11,508 INFO L225 Difference]: With dead ends: 776 [2021-11-25 18:59:11,508 INFO L226 Difference]: Without dead ends: 680 [2021-11-25 18:59:11,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=557, Invalid=3349, Unknown=0, NotChecked=0, Total=3906 [2021-11-25 18:59:11,509 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 1504 mSDsluCounter, 6676 mSDsCounter, 0 mSdLazyCounter, 5298 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 6929 SdHoareTripleChecker+Invalid, 5368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 5298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:11,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1504 Valid, 6929 Invalid, 5368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 5298 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-25 18:59:11,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-11-25 18:59:11,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 648. [2021-11-25 18:59:11,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 632 states have (on average 1.2943037974683544) internal successors, (818), 647 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:11,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 818 transitions. [2021-11-25 18:59:11,743 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 818 transitions. Word has length 97 [2021-11-25 18:59:11,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:11,743 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 818 transitions. [2021-11-25 18:59:11,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 33 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:11,743 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 818 transitions. [2021-11-25 18:59:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 18:59:11,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:11,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:11,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-25 18:59:11,744 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:11,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:11,745 INFO L85 PathProgramCache]: Analyzing trace with hash 638588087, now seen corresponding path program 1 times [2021-11-25 18:59:11,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:11,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435956913] [2021-11-25 18:59:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:11,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:12,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:12,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435956913] [2021-11-25 18:59:12,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435956913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:12,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:12,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:59:12,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618456374] [2021-11-25 18:59:12,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:12,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:59:12,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:12,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:59:12,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:59:12,047 INFO L87 Difference]: Start difference. First operand 648 states and 818 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:13,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:13,743 INFO L93 Difference]: Finished difference Result 1510 states and 1950 transitions. [2021-11-25 18:59:13,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:59:13,743 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-25 18:59:13,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:13,744 INFO L225 Difference]: With dead ends: 1510 [2021-11-25 18:59:13,744 INFO L226 Difference]: Without dead ends: 1364 [2021-11-25 18:59:13,745 INFO L932 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 [2021-11-25 18:59:13,745 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 1959 mSDsluCounter, 3711 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1959 SdHoareTripleChecker+Valid, 4416 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:13,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1959 Valid, 4416 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:59:13,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-11-25 18:59:13,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 594. [2021-11-25 18:59:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 581 states have (on average 1.2857142857142858) internal successors, (747), 593 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 747 transitions. [2021-11-25 18:59:13,964 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 747 transitions. Word has length 97 [2021-11-25 18:59:13,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:13,964 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 747 transitions. [2021-11-25 18:59:13,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:13,964 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 747 transitions. [2021-11-25 18:59:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 18:59:13,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:13,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:13,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-25 18:59:13,965 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:13,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:13,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1773183359, now seen corresponding path program 1 times [2021-11-25 18:59:13,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:13,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916464579] [2021-11-25 18:59:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:13,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:14,654 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:14,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916464579] [2021-11-25 18:59:14,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916464579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:14,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:14,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-25 18:59:14,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251307296] [2021-11-25 18:59:14,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:14,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-25 18:59:14,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:14,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-25 18:59:14,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-11-25 18:59:14,656 INFO L87 Difference]: Start difference. First operand 594 states and 747 transitions. Second operand has 22 states, 22 states have (on average 4.409090909090909) internal successors, (97), 21 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:18,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:18,726 INFO L93 Difference]: Finished difference Result 1893 states and 2433 transitions. [2021-11-25 18:59:18,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-25 18:59:18,727 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.409090909090909) internal successors, (97), 21 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-25 18:59:18,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:18,728 INFO L225 Difference]: With dead ends: 1893 [2021-11-25 18:59:18,728 INFO L226 Difference]: Without dead ends: 1755 [2021-11-25 18:59:18,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=449, Invalid=1713, Unknown=0, NotChecked=0, Total=2162 [2021-11-25 18:59:18,729 INFO L933 BasicCegarLoop]: 979 mSDtfsCounter, 3018 mSDsluCounter, 10299 mSDsCounter, 0 mSdLazyCounter, 3076 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3018 SdHoareTripleChecker+Valid, 11029 SdHoareTripleChecker+Invalid, 3165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:18,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3018 Valid, 11029 Invalid, 3165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 3076 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 18:59:18,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2021-11-25 18:59:18,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 606. [2021-11-25 18:59:18,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 593 states have (on average 1.2799325463743676) internal successors, (759), 605 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:18,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 759 transitions. [2021-11-25 18:59:18,972 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 759 transitions. Word has length 97 [2021-11-25 18:59:18,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:18,972 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 759 transitions. [2021-11-25 18:59:18,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.409090909090909) internal successors, (97), 21 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 759 transitions. [2021-11-25 18:59:18,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 18:59:18,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:18,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:18,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-25 18:59:18,974 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:18,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:18,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2131959411, now seen corresponding path program 1 times [2021-11-25 18:59:18,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:18,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000236184] [2021-11-25 18:59:18,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:18,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:19,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:19,295 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:19,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000236184] [2021-11-25 18:59:19,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000236184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:19,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:19,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:59:19,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368879002] [2021-11-25 18:59:19,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:19,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:59:19,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:19,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:59:19,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:59:19,296 INFO L87 Difference]: Start difference. First operand 606 states and 759 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:21,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:21,082 INFO L93 Difference]: Finished difference Result 1362 states and 1755 transitions. [2021-11-25 18:59:21,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:59:21,083 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-25 18:59:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:21,084 INFO L225 Difference]: With dead ends: 1362 [2021-11-25 18:59:21,084 INFO L226 Difference]: Without dead ends: 1224 [2021-11-25 18:59:21,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 18:59:21,085 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1760 mSDsluCounter, 4038 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 4595 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:21,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1760 Valid, 4595 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:59:21,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-11-25 18:59:21,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 560. [2021-11-25 18:59:21,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 548 states have (on average 1.2737226277372262) internal successors, (698), 559 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 698 transitions. [2021-11-25 18:59:21,318 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 698 transitions. Word has length 97 [2021-11-25 18:59:21,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:21,318 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 698 transitions. [2021-11-25 18:59:21,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:21,319 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 698 transitions. [2021-11-25 18:59:21,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 18:59:21,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:21,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:21,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-25 18:59:21,320 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:21,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:21,321 INFO L85 PathProgramCache]: Analyzing trace with hash -133396310, now seen corresponding path program 1 times [2021-11-25 18:59:21,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:21,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797996148] [2021-11-25 18:59:21,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:21,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:21,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:21,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797996148] [2021-11-25 18:59:21,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797996148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:21,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:21,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 18:59:21,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282370161] [2021-11-25 18:59:21,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:21,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 18:59:21,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:21,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 18:59:21,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:59:21,639 INFO L87 Difference]: Start difference. First operand 560 states and 698 transitions. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:22,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:22,716 INFO L93 Difference]: Finished difference Result 999 states and 1272 transitions. [2021-11-25 18:59:22,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:59:22,716 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-25 18:59:22,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:22,717 INFO L225 Difference]: With dead ends: 999 [2021-11-25 18:59:22,717 INFO L226 Difference]: Without dead ends: 709 [2021-11-25 18:59:22,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-11-25 18:59:22,718 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 987 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:22,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 3369 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:59:22,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2021-11-25 18:59:22,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 362. [2021-11-25 18:59:22,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 355 states have (on average 1.2507042253521128) internal successors, (444), 361 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 444 transitions. [2021-11-25 18:59:22,928 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 444 transitions. Word has length 97 [2021-11-25 18:59:22,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:22,928 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 444 transitions. [2021-11-25 18:59:22,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:22,928 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 444 transitions. [2021-11-25 18:59:22,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 18:59:22,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:22,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:22,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-25 18:59:22,929 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:22,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:22,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1851448540, now seen corresponding path program 1 times [2021-11-25 18:59:22,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:22,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431039732] [2021-11-25 18:59:22,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:22,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:23,091 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:23,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431039732] [2021-11-25 18:59:23,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431039732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:23,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:23,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:59:23,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959388129] [2021-11-25 18:59:23,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:23,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:59:23,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:23,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:59:23,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:59:23,093 INFO L87 Difference]: Start difference. First operand 362 states and 444 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:25,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:25,620 INFO L93 Difference]: Finished difference Result 1380 states and 1794 transitions. [2021-11-25 18:59:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 18:59:25,620 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-25 18:59:25,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:25,622 INFO L225 Difference]: With dead ends: 1380 [2021-11-25 18:59:25,622 INFO L226 Difference]: Without dead ends: 1258 [2021-11-25 18:59:25,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2021-11-25 18:59:25,622 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 2551 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2551 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:25,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2551 Valid, 1127 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:59:25,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2021-11-25 18:59:25,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 370. [2021-11-25 18:59:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 363 states have (on average 1.2424242424242424) internal successors, (451), 369 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 451 transitions. [2021-11-25 18:59:25,838 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 451 transitions. Word has length 98 [2021-11-25 18:59:25,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:25,838 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 451 transitions. [2021-11-25 18:59:25,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:25,840 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 451 transitions. [2021-11-25 18:59:25,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 18:59:25,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:25,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:25,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-25 18:59:25,841 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:25,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:25,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1648868085, now seen corresponding path program 1 times [2021-11-25 18:59:25,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:25,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226827356] [2021-11-25 18:59:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:25,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:25,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:25,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226827356] [2021-11-25 18:59:25,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226827356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:25,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:25,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:59:25,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127093432] [2021-11-25 18:59:25,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:25,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:59:25,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:25,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:59:25,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:59:25,944 INFO L87 Difference]: Start difference. First operand 370 states and 451 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:27,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:27,016 INFO L93 Difference]: Finished difference Result 719 states and 906 transitions. [2021-11-25 18:59:27,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:59:27,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-25 18:59:27,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:27,017 INFO L225 Difference]: With dead ends: 719 [2021-11-25 18:59:27,017 INFO L226 Difference]: Without dead ends: 712 [2021-11-25 18:59:27,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:59:27,017 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 1207 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:27,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 642 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:59:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-11-25 18:59:27,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 370. [2021-11-25 18:59:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 363 states have (on average 1.234159779614325) internal successors, (448), 369 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) [2021-11-25 18:59:27,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 448 transitions. [2021-11-25 18:59:27,232 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 448 transitions. Word has length 98 [2021-11-25 18:59:27,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:27,232 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 448 transitions. [2021-11-25 18:59:27,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:27,232 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 448 transitions. [2021-11-25 18:59:27,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 18:59:27,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:27,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:27,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-25 18:59:27,235 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:27,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:27,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1496260911, now seen corresponding path program 1 times [2021-11-25 18:59:27,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:27,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036678688] [2021-11-25 18:59:27,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:27,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:27,499 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:27,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036678688] [2021-11-25 18:59:27,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036678688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:27,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:27,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:59:27,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349583039] [2021-11-25 18:59:27,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:27,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:59:27,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:27,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:59:27,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:59:27,500 INFO L87 Difference]: Start difference. First operand 370 states and 448 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:28,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:28,381 INFO L93 Difference]: Finished difference Result 620 states and 772 transitions. [2021-11-25 18:59:28,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:59:28,382 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-25 18:59:28,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:28,383 INFO L225 Difference]: With dead ends: 620 [2021-11-25 18:59:28,383 INFO L226 Difference]: Without dead ends: 522 [2021-11-25 18:59:28,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:59:28,383 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 1116 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:28,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 1312 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:59:28,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-11-25 18:59:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 340. [2021-11-25 18:59:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 334 states have (on average 1.2245508982035929) internal successors, (409), 339 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 409 transitions. [2021-11-25 18:59:28,584 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 409 transitions. Word has length 98 [2021-11-25 18:59:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:28,584 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 409 transitions. [2021-11-25 18:59:28,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:28,584 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 409 transitions. [2021-11-25 18:59:28,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 18:59:28,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:28,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:28,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-25 18:59:28,585 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:28,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:28,585 INFO L85 PathProgramCache]: Analyzing trace with hash 162352470, now seen corresponding path program 1 times [2021-11-25 18:59:28,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:28,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248836546] [2021-11-25 18:59:28,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:28,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:29,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:29,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248836546] [2021-11-25 18:59:29,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248836546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:29,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:29,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-25 18:59:29,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668734345] [2021-11-25 18:59:29,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:29,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-25 18:59:29,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:29,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-25 18:59:29,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:59:29,100 INFO L87 Difference]: Start difference. First operand 340 states and 409 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:31,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:31,410 INFO L93 Difference]: Finished difference Result 1148 states and 1462 transitions. [2021-11-25 18:59:31,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 18:59:31,410 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-25 18:59:31,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:31,411 INFO L225 Difference]: With dead ends: 1148 [2021-11-25 18:59:31,411 INFO L226 Difference]: Without dead ends: 1018 [2021-11-25 18:59:31,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 18:59:31,414 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 1832 mSDsluCounter, 3511 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 3819 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:31,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1832 Valid, 3819 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:59:31,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2021-11-25 18:59:31,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 328. [2021-11-25 18:59:31,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 322 states have (on average 1.2267080745341614) internal successors, (395), 327 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:31,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 395 transitions. [2021-11-25 18:59:31,622 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 395 transitions. Word has length 98 [2021-11-25 18:59:31,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:31,622 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 395 transitions. [2021-11-25 18:59:31,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:31,622 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 395 transitions. [2021-11-25 18:59:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 18:59:31,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:31,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:31,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-25 18:59:31,623 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:31,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:31,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1432987129, now seen corresponding path program 1 times [2021-11-25 18:59:31,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:31,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860245931] [2021-11-25 18:59:31,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:31,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:31,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:31,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860245931] [2021-11-25 18:59:31,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860245931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:31,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:31,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:59:31,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957176294] [2021-11-25 18:59:31,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:31,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:59:31,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:31,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:59:31,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:59:31,917 INFO L87 Difference]: Start difference. First operand 328 states and 395 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:33,063 INFO L93 Difference]: Finished difference Result 580 states and 719 transitions. [2021-11-25 18:59:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:59:33,063 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-25 18:59:33,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:33,064 INFO L225 Difference]: With dead ends: 580 [2021-11-25 18:59:33,064 INFO L226 Difference]: Without dead ends: 482 [2021-11-25 18:59:33,064 INFO L932 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 [2021-11-25 18:59:33,064 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 1225 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:33,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 1036 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:59:33,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-11-25 18:59:33,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 316. [2021-11-25 18:59:33,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 311 states have (on average 1.2154340836012862) internal successors, (378), 315 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:33,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 378 transitions. [2021-11-25 18:59:33,268 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 378 transitions. Word has length 98 [2021-11-25 18:59:33,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:33,268 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 378 transitions. [2021-11-25 18:59:33,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 378 transitions. [2021-11-25 18:59:33,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 18:59:33,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:33,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:33,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-25 18:59:33,269 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:33,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1580439968, now seen corresponding path program 1 times [2021-11-25 18:59:33,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:33,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800988208] [2021-11-25 18:59:33,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:33,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:33,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:33,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:33,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800988208] [2021-11-25 18:59:33,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800988208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:33,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:33,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:59:33,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064466142] [2021-11-25 18:59:33,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:33,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:59:33,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:33,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:59:33,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:59:33,584 INFO L87 Difference]: Start difference. First operand 316 states and 378 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:35,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:35,130 INFO L93 Difference]: Finished difference Result 924 states and 1157 transitions. [2021-11-25 18:59:35,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:59:35,132 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-25 18:59:35,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:35,133 INFO L225 Difference]: With dead ends: 924 [2021-11-25 18:59:35,133 INFO L226 Difference]: Without dead ends: 778 [2021-11-25 18:59:35,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 18:59:35,134 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 970 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:35,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [970 Valid, 2290 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:59:35,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-11-25 18:59:35,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 262. [2021-11-25 18:59:35,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 259 states have (on average 1.2046332046332047) internal successors, (312), 261 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:35,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 312 transitions. [2021-11-25 18:59:35,337 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 312 transitions. Word has length 98 [2021-11-25 18:59:35,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:35,338 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 312 transitions. [2021-11-25 18:59:35,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:35,338 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 312 transitions. [2021-11-25 18:59:35,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-25 18:59:35,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:35,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:35,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-25 18:59:35,338 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:35,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:35,339 INFO L85 PathProgramCache]: Analyzing trace with hash 526405733, now seen corresponding path program 1 times [2021-11-25 18:59:35,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:35,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588068000] [2021-11-25 18:59:35,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:35,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:35,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:35,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588068000] [2021-11-25 18:59:35,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588068000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:35,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:35,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:59:35,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321144098] [2021-11-25 18:59:35,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:35,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:59:35,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:35,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:59:35,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:59:35,423 INFO L87 Difference]: Start difference. First operand 262 states and 312 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:36,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:36,107 INFO L93 Difference]: Finished difference Result 528 states and 656 transitions. [2021-11-25 18:59:36,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 18:59:36,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-11-25 18:59:36,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:36,108 INFO L225 Difference]: With dead ends: 528 [2021-11-25 18:59:36,108 INFO L226 Difference]: Without dead ends: 406 [2021-11-25 18:59:36,109 INFO L932 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 [2021-11-25 18:59:36,109 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 505 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:36,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 547 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:59:36,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-25 18:59:36,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 254. [2021-11-25 18:59:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 251 states have (on average 1.203187250996016) internal successors, (302), 253 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:36,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 302 transitions. [2021-11-25 18:59:36,298 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 302 transitions. Word has length 99 [2021-11-25 18:59:36,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:36,298 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 302 transitions. [2021-11-25 18:59:36,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:36,298 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 302 transitions. [2021-11-25 18:59:36,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-25 18:59:36,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:36,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:36,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-25 18:59:36,299 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:36,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:36,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1289791201, now seen corresponding path program 1 times [2021-11-25 18:59:36,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:36,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078268026] [2021-11-25 18:59:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:36,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:37,722 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:37,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078268026] [2021-11-25 18:59:37,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078268026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:37,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:37,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-25 18:59:37,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658648462] [2021-11-25 18:59:37,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:37,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-25 18:59:37,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:37,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-25 18:59:37,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 18:59:37,723 INFO L87 Difference]: Start difference. First operand 254 states and 302 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:41,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:41,244 INFO L93 Difference]: Finished difference Result 492 states and 610 transitions. [2021-11-25 18:59:41,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-25 18:59:41,244 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-25 18:59:41,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:41,245 INFO L225 Difference]: With dead ends: 492 [2021-11-25 18:59:41,245 INFO L226 Difference]: Without dead ends: 486 [2021-11-25 18:59:41,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=549, Invalid=3111, Unknown=0, NotChecked=0, Total=3660 [2021-11-25 18:59:41,246 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 869 mSDsluCounter, 3756 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 3837 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:41,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 3837 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:59:41,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-11-25 18:59:41,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 275. [2021-11-25 18:59:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 272 states have (on average 1.2058823529411764) internal successors, (328), 274 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:41,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 328 transitions. [2021-11-25 18:59:41,481 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 328 transitions. Word has length 100 [2021-11-25 18:59:41,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:41,482 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 328 transitions. [2021-11-25 18:59:41,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:41,482 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 328 transitions. [2021-11-25 18:59:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-25 18:59:41,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:41,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:41,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-25 18:59:41,483 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:41,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:41,483 INFO L85 PathProgramCache]: Analyzing trace with hash -665675578, now seen corresponding path program 1 times [2021-11-25 18:59:41,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:41,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938612775] [2021-11-25 18:59:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:41,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:42,837 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:42,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938612775] [2021-11-25 18:59:42,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938612775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:42,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:42,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-25 18:59:42,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139053512] [2021-11-25 18:59:42,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:42,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-25 18:59:42,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:42,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-25 18:59:42,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:59:42,839 INFO L87 Difference]: Start difference. First operand 275 states and 328 transitions. Second operand has 32 states, 32 states have (on average 3.125) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:45,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:45,945 INFO L93 Difference]: Finished difference Result 307 states and 360 transitions. [2021-11-25 18:59:45,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-25 18:59:45,946 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.125) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-25 18:59:45,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:45,946 INFO L225 Difference]: With dead ends: 307 [2021-11-25 18:59:45,946 INFO L226 Difference]: Without dead ends: 299 [2021-11-25 18:59:45,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=531, Invalid=3009, Unknown=0, NotChecked=0, Total=3540 [2021-11-25 18:59:45,947 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 648 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:45,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 2390 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 18:59:45,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-25 18:59:46,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 279. [2021-11-25 18:59:46,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 276 states have (on average 1.2065217391304348) internal successors, (333), 278 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:46,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 333 transitions. [2021-11-25 18:59:46,159 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 333 transitions. Word has length 100 [2021-11-25 18:59:46,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:46,160 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 333 transitions. [2021-11-25 18:59:46,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.125) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:46,160 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 333 transitions. [2021-11-25 18:59:46,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-25 18:59:46,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:46,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:46,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-25 18:59:46,161 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:46,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:46,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2052645067, now seen corresponding path program 1 times [2021-11-25 18:59:46,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:46,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136257104] [2021-11-25 18:59:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:46,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:46,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:46,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136257104] [2021-11-25 18:59:46,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136257104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:46,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:46,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:59:46,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676576254] [2021-11-25 18:59:46,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:46,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:59:46,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:46,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:59:46,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:59:46,450 INFO L87 Difference]: Start difference. First operand 279 states and 333 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:47,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:47,745 INFO L93 Difference]: Finished difference Result 663 states and 832 transitions. [2021-11-25 18:59:47,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:59:47,746 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-25 18:59:47,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:47,746 INFO L225 Difference]: With dead ends: 663 [2021-11-25 18:59:47,746 INFO L226 Difference]: Without dead ends: 648 [2021-11-25 18:59:47,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-11-25 18:59:47,747 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 796 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:47,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 1847 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:59:47,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-11-25 18:59:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 263. [2021-11-25 18:59:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 261 states have (on average 1.2030651340996168) internal successors, (314), 262 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:47,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 314 transitions. [2021-11-25 18:59:47,960 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 314 transitions. Word has length 101 [2021-11-25 18:59:47,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:47,961 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 314 transitions. [2021-11-25 18:59:47,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:47,961 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 314 transitions. [2021-11-25 18:59:47,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-25 18:59:47,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:47,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:47,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-25 18:59:47,962 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:47,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:47,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1441605077, now seen corresponding path program 1 times [2021-11-25 18:59:47,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:47,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293982035] [2021-11-25 18:59:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:47,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:48,263 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:48,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293982035] [2021-11-25 18:59:48,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293982035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:48,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:48,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:59:48,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641960416] [2021-11-25 18:59:48,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:48,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:59:48,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:48,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:59:48,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:59:48,265 INFO L87 Difference]: Start difference. First operand 263 states and 314 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:49,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:49,745 INFO L93 Difference]: Finished difference Result 593 states and 746 transitions. [2021-11-25 18:59:49,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:59:49,745 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-25 18:59:49,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:49,746 INFO L225 Difference]: With dead ends: 593 [2021-11-25 18:59:49,746 INFO L226 Difference]: Without dead ends: 587 [2021-11-25 18:59:49,746 INFO L932 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 [2021-11-25 18:59:49,746 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 895 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:49,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 1797 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:59:49,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-11-25 18:59:49,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 236. [2021-11-25 18:59:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.195744680851064) internal successors, (281), 235 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 281 transitions. [2021-11-25 18:59:49,953 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 281 transitions. Word has length 101 [2021-11-25 18:59:49,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:49,953 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 281 transitions. [2021-11-25 18:59:49,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:49,954 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 281 transitions. [2021-11-25 18:59:49,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 18:59:49,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:49,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:49,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-25 18:59:49,955 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:49,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:49,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1975645771, now seen corresponding path program 1 times [2021-11-25 18:59:49,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:49,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107100762] [2021-11-25 18:59:49,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:49,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:49,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:49,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107100762] [2021-11-25 18:59:49,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107100762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:49,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:49,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:59:49,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736437986] [2021-11-25 18:59:49,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:49,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:49,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:49,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:49,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:49,999 INFO L87 Difference]: Start difference. First operand 236 states and 281 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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) [2021-11-25 18:59:50,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:50,309 INFO L93 Difference]: Finished difference Result 336 states and 415 transitions. [2021-11-25 18:59:50,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:50,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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 [2021-11-25 18:59:50,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:50,310 INFO L225 Difference]: With dead ends: 336 [2021-11-25 18:59:50,310 INFO L226 Difference]: Without dead ends: 289 [2021-11-25 18:59:50,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:50,311 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 73 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:50,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 336 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:59:50,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-25 18:59:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 279. [2021-11-25 18:59:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.2158273381294964) internal successors, (338), 278 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:50,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 338 transitions. [2021-11-25 18:59:50,604 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 338 transitions. Word has length 118 [2021-11-25 18:59:50,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:50,605 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 338 transitions. [2021-11-25 18:59:50,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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) [2021-11-25 18:59:50,605 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 338 transitions. [2021-11-25 18:59:50,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-25 18:59:50,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:50,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:50,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-25 18:59:50,606 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:50,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:50,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1353285522, now seen corresponding path program 1 times [2021-11-25 18:59:50,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:50,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120125259] [2021-11-25 18:59:50,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:50,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:50,663 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:50,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120125259] [2021-11-25 18:59:50,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120125259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:50,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:50,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:59:50,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511451485] [2021-11-25 18:59:50,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:50,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:50,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:50,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:50,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:50,665 INFO L87 Difference]: Start difference. First operand 279 states and 338 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 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) [2021-11-25 18:59:51,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:51,280 INFO L93 Difference]: Finished difference Result 545 states and 696 transitions. [2021-11-25 18:59:51,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:51,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 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 [2021-11-25 18:59:51,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:51,281 INFO L225 Difference]: With dead ends: 545 [2021-11-25 18:59:51,281 INFO L226 Difference]: Without dead ends: 412 [2021-11-25 18:59:51,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:51,285 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 66 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:51,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 336 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:59:51,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-25 18:59:51,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 398. [2021-11-25 18:59:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 1.2544080604534005) internal successors, (498), 397 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 498 transitions. [2021-11-25 18:59:51,779 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 498 transitions. Word has length 121 [2021-11-25 18:59:51,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:51,779 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 498 transitions. [2021-11-25 18:59:51,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 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) [2021-11-25 18:59:51,780 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 498 transitions. [2021-11-25 18:59:51,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-25 18:59:51,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:51,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:51,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-25 18:59:51,781 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:51,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:51,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1408361133, now seen corresponding path program 1 times [2021-11-25 18:59:51,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:51,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666755600] [2021-11-25 18:59:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:51,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:51,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:51,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:51,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666755600] [2021-11-25 18:59:51,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666755600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:51,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:51,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:59:51,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923831051] [2021-11-25 18:59:51,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:51,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:51,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:51,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:51,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:51,825 INFO L87 Difference]: Start difference. First operand 398 states and 498 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:52,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:52,819 INFO L93 Difference]: Finished difference Result 902 states and 1176 transitions. [2021-11-25 18:59:52,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:52,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2021-11-25 18:59:52,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:52,820 INFO L225 Difference]: With dead ends: 902 [2021-11-25 18:59:52,820 INFO L226 Difference]: Without dead ends: 650 [2021-11-25 18:59:52,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:52,821 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 59 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:52,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 336 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:59:52,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-11-25 18:59:53,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 624. [2021-11-25 18:59:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 1.2841091492776886) internal successors, (800), 623 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 800 transitions. [2021-11-25 18:59:53,757 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 800 transitions. Word has length 124 [2021-11-25 18:59:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:53,757 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 800 transitions. [2021-11-25 18:59:53,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 800 transitions. [2021-11-25 18:59:53,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:59:53,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:53,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:53,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-25 18:59:53,758 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:53,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:53,758 INFO L85 PathProgramCache]: Analyzing trace with hash 432519453, now seen corresponding path program 1 times [2021-11-25 18:59:53,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:53,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830844137] [2021-11-25 18:59:53,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:53,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:53,815 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:53,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830844137] [2021-11-25 18:59:53,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830844137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:53,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:53,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:59:53,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758222607] [2021-11-25 18:59:53,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:53,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:53,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:53,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:53,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:53,818 INFO L87 Difference]: Start difference. First operand 624 states and 800 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:55,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:55,680 INFO L93 Difference]: Finished difference Result 1580 states and 2082 transitions. [2021-11-25 18:59:55,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:55,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:59:55,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:55,681 INFO L225 Difference]: With dead ends: 1580 [2021-11-25 18:59:55,681 INFO L226 Difference]: Without dead ends: 1102 [2021-11-25 18:59:55,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:55,682 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 52 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:55,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 336 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:59:55,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-25 18:59:57,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1052. [2021-11-25 18:59:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1051 states have (on average 1.301617507136061) internal successors, (1368), 1051 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:57,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1368 transitions. [2021-11-25 18:59:57,439 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1368 transitions. Word has length 127 [2021-11-25 18:59:57,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:57,439 INFO L470 AbstractCegarLoop]: Abstraction has 1052 states and 1368 transitions. [2021-11-25 18:59:57,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:57,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1368 transitions. [2021-11-25 18:59:57,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-25 18:59:57,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:57,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:57,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-25 18:59:57,440 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 18:59:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:57,441 INFO L85 PathProgramCache]: Analyzing trace with hash 944901405, now seen corresponding path program 1 times [2021-11-25 18:59:57,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:57,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339957634] [2021-11-25 18:59:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:57,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:57,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:57,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339957634] [2021-11-25 18:59:57,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339957634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:57,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:57,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:59:57,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46160008] [2021-11-25 18:59:57,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:57,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:57,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:57,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:57,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:57,485 INFO L87 Difference]: Start difference. First operand 1052 states and 1368 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:00,974 INFO L93 Difference]: Finished difference Result 2864 states and 3786 transitions. [2021-11-25 19:00:00,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:00:00,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2021-11-25 19:00:00,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:00,976 INFO L225 Difference]: With dead ends: 2864 [2021-11-25 19:00:00,976 INFO L226 Difference]: Without dead ends: 1958 [2021-11-25 19:00:00,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:00,977 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 45 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:00,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 336 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:00:00,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2021-11-25 19:00:04,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1860. [2021-11-25 19:00:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1859 states have (on average 1.3082302313071543) internal successors, (2432), 1859 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:04,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 2432 transitions. [2021-11-25 19:00:04,422 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 2432 transitions. Word has length 130 [2021-11-25 19:00:04,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:04,422 INFO L470 AbstractCegarLoop]: Abstraction has 1860 states and 2432 transitions. [2021-11-25 19:00:04,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:04,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 2432 transitions. [2021-11-25 19:00:04,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 19:00:04,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:04,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:04,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-25 19:00:04,423 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 19:00:04,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:04,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1183996359, now seen corresponding path program 1 times [2021-11-25 19:00:04,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:04,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151723656] [2021-11-25 19:00:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:04,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:04,468 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:04,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151723656] [2021-11-25 19:00:04,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151723656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:04,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:04,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:00:04,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82996788] [2021-11-25 19:00:04,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:04,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:00:04,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:04,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:00:04,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:04,471 INFO L87 Difference]: Start difference. First operand 1860 states and 2432 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:11,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:11,237 INFO L93 Difference]: Finished difference Result 5288 states and 6978 transitions. [2021-11-25 19:00:11,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:00:11,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-25 19:00:11,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:11,241 INFO L225 Difference]: With dead ends: 5288 [2021-11-25 19:00:11,241 INFO L226 Difference]: Without dead ends: 3574 [2021-11-25 19:00:11,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:11,243 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 35 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:11,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 336 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:00:11,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2021-11-25 19:00:17,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 3380. [2021-11-25 19:00:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3380 states, 3379 states have (on average 1.3068955312222552) internal successors, (4416), 3379 states have internal predecessors, (4416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:17,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 4416 transitions. [2021-11-25 19:00:17,791 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 4416 transitions. Word has length 133 [2021-11-25 19:00:17,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:17,792 INFO L470 AbstractCegarLoop]: Abstraction has 3380 states and 4416 transitions. [2021-11-25 19:00:17,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:17,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 4416 transitions. [2021-11-25 19:00:17,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-25 19:00:17,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:17,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:17,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-25 19:00:17,793 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 19:00:17,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1161915133, now seen corresponding path program 1 times [2021-11-25 19:00:17,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:17,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366883700] [2021-11-25 19:00:17,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:17,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:17,863 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:17,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366883700] [2021-11-25 19:00:17,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366883700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:17,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:17,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 19:00:17,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112356781] [2021-11-25 19:00:17,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:17,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:00:17,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:17,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:00:17,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:00:17,864 INFO L87 Difference]: Start difference. First operand 3380 states and 4416 transitions. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:38,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:38,485 INFO L93 Difference]: Finished difference Result 13705 states and 18065 transitions. [2021-11-25 19:00:38,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 19:00:38,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2021-11-25 19:00:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:38,495 INFO L225 Difference]: With dead ends: 13705 [2021-11-25 19:00:38,495 INFO L226 Difference]: Without dead ends: 10471 [2021-11-25 19:00:38,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-25 19:00:38,499 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 1137 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:38,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 2091 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:00:38,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10471 states. [2021-11-25 19:00:47,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10471 to 4718. [2021-11-25 19:00:47,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4718 states, 4717 states have (on average 1.30125079499682) internal successors, (6138), 4717 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:47,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4718 states to 4718 states and 6138 transitions. [2021-11-25 19:00:47,993 INFO L78 Accepts]: Start accepts. Automaton has 4718 states and 6138 transitions. Word has length 136 [2021-11-25 19:00:47,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:47,993 INFO L470 AbstractCegarLoop]: Abstraction has 4718 states and 6138 transitions. [2021-11-25 19:00:47,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:47,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4718 states and 6138 transitions. [2021-11-25 19:00:47,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-25 19:00:47,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:47,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:47,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-25 19:00:47,995 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 19:00:47,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:47,996 INFO L85 PathProgramCache]: Analyzing trace with hash -49276926, now seen corresponding path program 1 times [2021-11-25 19:00:47,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:47,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493498072] [2021-11-25 19:00:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:47,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:48,042 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:48,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493498072] [2021-11-25 19:00:48,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493498072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:48,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:48,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:00:48,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666728751] [2021-11-25 19:00:48,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:48,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:00:48,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:48,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:00:48,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:48,044 INFO L87 Difference]: Start difference. First operand 4718 states and 6138 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:00:59,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:59,659 INFO L93 Difference]: Finished difference Result 10476 states and 13686 transitions. [2021-11-25 19:00:59,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:00:59,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2021-11-25 19:00:59,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:59,665 INFO L225 Difference]: With dead ends: 10476 [2021-11-25 19:00:59,665 INFO L226 Difference]: Without dead ends: 5904 [2021-11-25 19:00:59,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:59,669 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 92 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:59,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 260 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:00:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5904 states. [2021-11-25 19:01:11,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5904 to 5902. [2021-11-25 19:01:11,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5902 states, 5901 states have (on average 1.294695814268768) internal successors, (7640), 5901 states have internal predecessors, (7640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:11,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5902 states to 5902 states and 7640 transitions. [2021-11-25 19:01:11,419 INFO L78 Accepts]: Start accepts. Automaton has 5902 states and 7640 transitions. Word has length 138 [2021-11-25 19:01:11,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:11,420 INFO L470 AbstractCegarLoop]: Abstraction has 5902 states and 7640 transitions. [2021-11-25 19:01:11,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:11,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5902 states and 7640 transitions. [2021-11-25 19:01:11,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-25 19:01:11,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:11,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:11,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-25 19:01:11,421 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 19:01:11,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:11,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1875011963, now seen corresponding path program 1 times [2021-11-25 19:01:11,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:11,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204497312] [2021-11-25 19:01:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:11,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:11,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:11,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204497312] [2021-11-25 19:01:11,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204497312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:11,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:11,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:01:11,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624881205] [2021-11-25 19:01:11,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:11,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:01:11,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:11,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:01:11,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:01:11,479 INFO L87 Difference]: Start difference. First operand 5902 states and 7640 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:23,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:23,311 INFO L93 Difference]: Finished difference Result 11660 states and 15122 transitions. [2021-11-25 19:01:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:01:23,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2021-11-25 19:01:23,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:23,317 INFO L225 Difference]: With dead ends: 11660 [2021-11-25 19:01:23,317 INFO L226 Difference]: Without dead ends: 5904 [2021-11-25 19:01:23,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:01:23,322 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 35 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:23,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 271 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:01:23,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5904 states. [2021-11-25 19:01:35,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5904 to 5902. [2021-11-25 19:01:35,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5902 states, 5901 states have (on average 1.2943568886629384) internal successors, (7638), 5901 states have internal predecessors, (7638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5902 states to 5902 states and 7638 transitions. [2021-11-25 19:01:35,513 INFO L78 Accepts]: Start accepts. Automaton has 5902 states and 7638 transitions. Word has length 138 [2021-11-25 19:01:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:35,513 INFO L470 AbstractCegarLoop]: Abstraction has 5902 states and 7638 transitions. [2021-11-25 19:01:35,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 5902 states and 7638 transitions. [2021-11-25 19:01:35,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-25 19:01:35,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:35,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:35,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-25 19:01:35,515 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 19:01:35,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:35,515 INFO L85 PathProgramCache]: Analyzing trace with hash -18028895, now seen corresponding path program 1 times [2021-11-25 19:01:35,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:35,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151017317] [2021-11-25 19:01:35,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:35,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:01:35,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:35,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151017317] [2021-11-25 19:01:35,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151017317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:35,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:35,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:01:35,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120486119] [2021-11-25 19:01:35,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:35,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:01:35,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:35,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:01:35,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:01:35,617 INFO L87 Difference]: Start difference. First operand 5902 states and 7638 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:01:53,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:53,763 INFO L93 Difference]: Finished difference Result 8456 states and 10779 transitions. [2021-11-25 19:01:53,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:01:53,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2021-11-25 19:01:53,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:53,771 INFO L225 Difference]: With dead ends: 8456 [2021-11-25 19:01:53,772 INFO L226 Difference]: Without dead ends: 8454 [2021-11-25 19:01:53,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:01:53,773 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 372 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:53,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 1092 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:01:53,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8454 states. [2021-11-25 19:02:05,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8454 to 5902. [2021-11-25 19:02:05,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5902 states, 5901 states have (on average 1.2780884595831215) internal successors, (7542), 5901 states have internal predecessors, (7542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5902 states to 5902 states and 7542 transitions. [2021-11-25 19:02:05,972 INFO L78 Accepts]: Start accepts. Automaton has 5902 states and 7542 transitions. Word has length 139 [2021-11-25 19:02:05,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:05,972 INFO L470 AbstractCegarLoop]: Abstraction has 5902 states and 7542 transitions. [2021-11-25 19:02:05,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:05,972 INFO L276 IsEmpty]: Start isEmpty. Operand 5902 states and 7542 transitions. [2021-11-25 19:02:05,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-25 19:02:05,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:05,974 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:05,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-25 19:02:05,974 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 19:02:05,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:05,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1612926421, now seen corresponding path program 1 times [2021-11-25 19:02:05,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:05,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613584529] [2021-11-25 19:02:05,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:05,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:02:06,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:06,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613584529] [2021-11-25 19:02:06,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613584529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:06,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:06,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 19:02:06,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958808616] [2021-11-25 19:02:06,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:06,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 19:02:06,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:06,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 19:02:06,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:02:06,189 INFO L87 Difference]: Start difference. First operand 5902 states and 7542 transitions. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:46,720 INFO L93 Difference]: Finished difference Result 24938 states and 31842 transitions. [2021-11-25 19:02:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 19:02:46,720 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 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 157 [2021-11-25 19:02:46,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:46,743 INFO L225 Difference]: With dead ends: 24938 [2021-11-25 19:02:46,743 INFO L226 Difference]: Without dead ends: 19168 [2021-11-25 19:02:46,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2021-11-25 19:02:46,751 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 1953 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:46,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1953 Valid, 920 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:02:46,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19168 states. [2021-11-25 19:02:59,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19168 to 5910. [2021-11-25 19:02:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5910 states, 5909 states have (on average 1.2777119647994584) internal successors, (7550), 5909 states have internal predecessors, (7550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5910 states to 5910 states and 7550 transitions. [2021-11-25 19:02:59,344 INFO L78 Accepts]: Start accepts. Automaton has 5910 states and 7550 transitions. Word has length 157 [2021-11-25 19:02:59,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:59,344 INFO L470 AbstractCegarLoop]: Abstraction has 5910 states and 7550 transitions. [2021-11-25 19:02:59,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:02:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5910 states and 7550 transitions. [2021-11-25 19:02:59,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-25 19:02:59,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:59,346 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:59,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-25 19:02:59,346 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 19:02:59,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:59,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1594789409, now seen corresponding path program 1 times [2021-11-25 19:02:59,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:59,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201544986] [2021-11-25 19:02:59,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:59,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:59,441 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:02:59,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:59,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201544986] [2021-11-25 19:02:59,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201544986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:59,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:59,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:02:59,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020149483] [2021-11-25 19:02:59,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:59,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:02:59,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:59,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:02:59,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:02:59,443 INFO L87 Difference]: Start difference. First operand 5910 states and 7550 transitions. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:18,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:18,777 INFO L93 Difference]: Finished difference Result 14914 states and 19075 transitions. [2021-11-25 19:03:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 19:03:18,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 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 158 [2021-11-25 19:03:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:18,786 INFO L225 Difference]: With dead ends: 14914 [2021-11-25 19:03:18,786 INFO L226 Difference]: Without dead ends: 9144 [2021-11-25 19:03:18,792 INFO L932 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 [2021-11-25 19:03:18,792 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 433 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:18,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 442 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:03:18,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9144 states. [2021-11-25 19:03:31,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9144 to 5902. [2021-11-25 19:03:31,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5902 states, 5901 states have (on average 1.277749533977292) internal successors, (7540), 5901 states have internal predecessors, (7540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5902 states to 5902 states and 7540 transitions. [2021-11-25 19:03:31,123 INFO L78 Accepts]: Start accepts. Automaton has 5902 states and 7540 transitions. Word has length 158 [2021-11-25 19:03:31,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:31,123 INFO L470 AbstractCegarLoop]: Abstraction has 5902 states and 7540 transitions. [2021-11-25 19:03:31,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:31,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5902 states and 7540 transitions. [2021-11-25 19:03:31,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-25 19:03:31,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:31,125 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:03:31,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-25 19:03:31,125 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 19:03:31,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:31,125 INFO L85 PathProgramCache]: Analyzing trace with hash -47503568, now seen corresponding path program 1 times [2021-11-25 19:03:31,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:31,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468344236] [2021-11-25 19:03:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:31,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:03:32,178 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:32,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468344236] [2021-11-25 19:03:32,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468344236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:32,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:32,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-25 19:03:32,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247024663] [2021-11-25 19:03:32,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:32,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-25 19:03:32,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:32,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-25 19:03:32,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2021-11-25 19:03:32,183 INFO L87 Difference]: Start difference. First operand 5902 states and 7540 transitions. Second operand has 31 states, 31 states have (on average 4.806451612903226) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:03:59,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:59,470 INFO L93 Difference]: Finished difference Result 17469 states and 22363 transitions. [2021-11-25 19:03:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-25 19:03:59,471 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.806451612903226) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 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 159 [2021-11-25 19:03:59,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:59,483 INFO L225 Difference]: With dead ends: 17469 [2021-11-25 19:03:59,483 INFO L226 Difference]: Without dead ends: 11704 [2021-11-25 19:03:59,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=440, Invalid=2752, Unknown=0, NotChecked=0, Total=3192 [2021-11-25 19:03:59,489 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 831 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:59,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 2463 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 19:03:59,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11704 states. [2021-11-25 19:04:12,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11704 to 5922. [2021-11-25 19:04:12,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5922 states, 5921 states have (on average 1.2773180206046275) internal successors, (7563), 5921 states have internal predecessors, (7563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5922 states to 5922 states and 7563 transitions. [2021-11-25 19:04:12,192 INFO L78 Accepts]: Start accepts. Automaton has 5922 states and 7563 transitions. Word has length 159 [2021-11-25 19:04:12,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:12,192 INFO L470 AbstractCegarLoop]: Abstraction has 5922 states and 7563 transitions. [2021-11-25 19:04:12,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.806451612903226) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:04:12,192 INFO L276 IsEmpty]: Start isEmpty. Operand 5922 states and 7563 transitions. [2021-11-25 19:04:12,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-25 19:04:12,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:12,194 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:12,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-25 19:04:12,194 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-25 19:04:12,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:12,194 INFO L85 PathProgramCache]: Analyzing trace with hash 842693888, now seen corresponding path program 1 times [2021-11-25 19:04:12,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:04:12,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602735933] [2021-11-25 19:04:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:12,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:04:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:04:19,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:04:19,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602735933] [2021-11-25 19:04:19,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602735933] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:04:19,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025805343] [2021-11-25 19:04:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:19,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:04:19,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:04:19,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:04:19,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c6bb47-96bf-4923-9409-29195e07f25f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:04:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:20,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 112 conjunts are in the unsatisfiable core [2021-11-25 19:04:20,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:05:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:05:22,056 INFO L328 TraceCheckSpWp]: Computing backward predicates...