./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/bin/utaipan-gh47qXpMRh --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 cbde3ab1953d8937efac8b8b2822040abdf74b6ffa6ca789e8e69e82dc2a63c0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 15:41:01,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:41:01,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:41:01,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:41:01,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:41:01,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:41:01,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:41:01,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:41:01,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:41:01,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:41:01,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:41:01,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:41:01,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:41:01,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:41:01,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:41:01,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:41:01,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:41:01,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:41:01,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:41:01,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:41:01,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:41:01,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:41:01,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:41:01,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:41:01,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:41:01,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:41:01,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:41:01,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:41:01,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:41:01,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:41:01,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:41:01,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:41:01,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:41:01,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:41:01,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:41:01,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:41:01,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:41:01,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:41:01,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:41:01,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:41:01,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:41:01,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 15:41:01,403 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:41:01,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:41:01,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:41:01,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:41:01,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:41:01,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:41:01,405 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:41:01,405 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:41:01,406 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:41:01,406 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:41:01,406 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:41:01,406 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:41:01,406 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:41:01,407 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:41:01,407 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:41:01,407 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:41:01,407 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:41:01,407 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:41:01,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:41:01,408 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:41:01,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:41:01,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:41:01,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:41:01,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:41:01,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:41:01,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:41:01,410 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:41:01,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:41:01,410 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:41:01,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:41:01,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:41:01,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:41:01,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:41:01,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:41:01,411 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:41:01,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:41:01,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:41:01,412 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:41:01,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:41:01,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:41:01,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:41:01,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbde3ab1953d8937efac8b8b2822040abdf74b6ffa6ca789e8e69e82dc2a63c0 [2022-12-14 15:41:01,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:41:01,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:41:01,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:41:01,600 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:41:01,601 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:41:01,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-12-14 15:41:04,293 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:41:04,509 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:41:04,510 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-12-14 15:41:04,522 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/bin/utaipan-gh47qXpMRh/data/54f22f5b5/66cf1496e21045fead1976a153eaf173/FLAG2664f0b7c [2022-12-14 15:41:04,532 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/bin/utaipan-gh47qXpMRh/data/54f22f5b5/66cf1496e21045fead1976a153eaf173 [2022-12-14 15:41:04,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:41:04,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:41:04,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:41:04,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:41:04,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:41:04,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:41:04" (1/1) ... [2022-12-14 15:41:04,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535a3e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:04, skipping insertion in model container [2022-12-14 15:41:04,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:41:04" (1/1) ... [2022-12-14 15:41:04,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:41:04,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:41:05,075 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[31102,31115] [2022-12-14 15:41:05,098 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[31992,32005] [2022-12-14 15:41:05,130 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[33651,33664] [2022-12-14 15:41:05,150 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[34541,34554] [2022-12-14 15:41:05,192 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[36972,36985] [2022-12-14 15:41:05,222 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[37865,37878] [2022-12-14 15:41:05,257 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[39527,39540] [2022-12-14 15:41:05,282 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[40888,40901] [2022-12-14 15:41:05,425 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[54752,54765] [2022-12-14 15:41:05,439 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[55645,55658] [2022-12-14 15:41:05,461 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[57307,57320] [2022-12-14 15:41:05,509 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[61464,61477] [2022-12-14 15:41:05,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:41:05,621 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:41:05,798 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[31102,31115] [2022-12-14 15:41:05,814 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[31992,32005] [2022-12-14 15:41:05,833 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[33651,33664] [2022-12-14 15:41:05,846 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[34541,34554] [2022-12-14 15:41:05,872 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[36972,36985] [2022-12-14 15:41:05,884 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[37865,37878] [2022-12-14 15:41:05,903 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[39527,39540] [2022-12-14 15:41:05,920 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[40888,40901] [2022-12-14 15:41:06,024 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[54752,54765] [2022-12-14 15:41:06,036 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[55645,55658] [2022-12-14 15:41:06,055 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[57307,57320] [2022-12-14 15:41:06,096 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[61464,61477] [2022-12-14 15:41:06,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:41:06,199 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:41:06,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:06 WrapperNode [2022-12-14 15:41:06,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:41:06,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:41:06,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:41:06,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:41:06,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:06" (1/1) ... [2022-12-14 15:41:06,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:06" (1/1) ... [2022-12-14 15:41:06,297 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3769 [2022-12-14 15:41:06,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:41:06,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:41:06,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:41:06,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:41:06,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:06" (1/1) ... [2022-12-14 15:41:06,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:06" (1/1) ... [2022-12-14 15:41:06,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:06" (1/1) ... [2022-12-14 15:41:06,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:06" (1/1) ... [2022-12-14 15:41:06,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:06" (1/1) ... [2022-12-14 15:41:06,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:06" (1/1) ... [2022-12-14 15:41:06,368 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:06" (1/1) ... [2022-12-14 15:41:06,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:06" (1/1) ... [2022-12-14 15:41:06,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:41:06,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:41:06,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:41:06,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:41:06,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:06" (1/1) ... [2022-12-14 15:41:06,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:41:06,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:41:06,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:41:06,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e3ad47-590b-47d5-a272-6aa4ae59c15c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:41:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:41:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:41:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:41:06,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:41:06,595 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:41:06,598 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:41:08,466 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:41:09,165 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:41:09,165 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 15:41:09,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:41:09 BoogieIcfgContainer [2022-12-14 15:41:09,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:41:09,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:41:09,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:41:09,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:41:09,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:41:04" (1/3) ... [2022-12-14 15:41:09,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df7e2ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:41:09, skipping insertion in model container [2022-12-14 15:41:09,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:06" (2/3) ... [2022-12-14 15:41:09,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df7e2ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:41:09, skipping insertion in model container [2022-12-14 15:41:09,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:41:09" (3/3) ... [2022-12-14 15:41:09,175 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-12-14 15:41:09,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:41:09,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-14 15:41:09,237 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:41:09,241 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@38527589, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:41:09,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-14 15:41:09,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 691 states, 671 states have (on average 1.752608047690015) internal successors, (1176), 690 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:09,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-12-14 15:41:09,262 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:41:09,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:41:09,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:41:09,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:41:09,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1928979181, now seen corresponding path program 1 times [2022-12-14 15:41:09,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:41:09,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747121623] [2022-12-14 15:41:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:41:09,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:41:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:41:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:41:11,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:41:11,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747121623] [2022-12-14 15:41:11,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747121623] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:41:11,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:41:11,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 15:41:11,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413800055] [2022-12-14 15:41:11,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:41:11,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 15:41:11,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:41:11,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 15:41:11,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 15:41:11,385 INFO L87 Difference]: Start difference. First operand has 691 states, 671 states have (on average 1.752608047690015) internal successors, (1176), 690 states have internal predecessors, (1176), 0 states have call successors, (0), 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 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:12,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:41:12,287 INFO L93 Difference]: Finished difference Result 1830 states and 3055 transitions. [2022-12-14 15:41:12,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 15:41:12,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2022-12-14 15:41:12,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:41:12,310 INFO L225 Difference]: With dead ends: 1830 [2022-12-14 15:41:12,310 INFO L226 Difference]: Without dead ends: 1386 [2022-12-14 15:41:12,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 15:41:12,318 INFO L413 NwaCegarLoop]: 1233 mSDtfsCounter, 1340 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 4449 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 15:41:12,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 4449 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 15:41:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2022-12-14 15:41:12,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1262. [2022-12-14 15:41:12,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1250 states have (on average 1.3968) internal successors, (1746), 1261 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1746 transitions. [2022-12-14 15:41:12,470 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1746 transitions. Word has length 257 [2022-12-14 15:41:12,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:41:12,471 INFO L495 AbstractCegarLoop]: Abstraction has 1262 states and 1746 transitions. [2022-12-14 15:41:12,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:12,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1746 transitions. [2022-12-14 15:41:12,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-12-14 15:41:12,478 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:41:12,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:41:12,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:41:12,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:41:12,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:41:12,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1520839126, now seen corresponding path program 1 times [2022-12-14 15:41:12,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:41:12,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815854770] [2022-12-14 15:41:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:41:12,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:41:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:41:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:41:12,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:41:12,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815854770] [2022-12-14 15:41:12,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815854770] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:41:12,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:41:12,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:41:12,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606584894] [2022-12-14 15:41:12,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:41:12,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:41:12,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:41:12,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:41:12,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:41:12,984 INFO L87 Difference]: Start difference. First operand 1262 states and 1746 transitions. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:13,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:41:13,518 INFO L93 Difference]: Finished difference Result 3738 states and 5163 transitions. [2022-12-14 15:41:13,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:41:13,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2022-12-14 15:41:13,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:41:13,526 INFO L225 Difference]: With dead ends: 3738 [2022-12-14 15:41:13,526 INFO L226 Difference]: Without dead ends: 2485 [2022-12-14 15:41:13,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:41:13,530 INFO L413 NwaCegarLoop]: 1458 mSDtfsCounter, 1937 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1937 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 15:41:13,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1937 Valid, 2274 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 15:41:13,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2022-12-14 15:41:13,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2424. [2022-12-14 15:41:13,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2412 states have (on average 1.39469320066335) internal successors, (3364), 2423 states have internal predecessors, (3364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:13,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 3364 transitions. [2022-12-14 15:41:13,708 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 3364 transitions. Word has length 257 [2022-12-14 15:41:13,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:41:13,708 INFO L495 AbstractCegarLoop]: Abstraction has 2424 states and 3364 transitions. [2022-12-14 15:41:13,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:13,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 3364 transitions. [2022-12-14 15:41:13,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-12-14 15:41:13,712 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:41:13,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:41:13,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 15:41:13,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:41:13,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:41:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1697404515, now seen corresponding path program 1 times [2022-12-14 15:41:13,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:41:13,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868636543] [2022-12-14 15:41:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:41:13,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:41:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:41:13,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:41:13,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:41:13,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868636543] [2022-12-14 15:41:13,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868636543] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:41:13,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:41:13,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:41:13,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001313229] [2022-12-14 15:41:13,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:41:13,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:41:13,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:41:13,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:41:13,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:41:13,826 INFO L87 Difference]: Start difference. First operand 2424 states and 3364 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:41:14,495 INFO L93 Difference]: Finished difference Result 7055 states and 9758 transitions. [2022-12-14 15:41:14,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:41:14,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2022-12-14 15:41:14,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:41:14,512 INFO L225 Difference]: With dead ends: 7055 [2022-12-14 15:41:14,512 INFO L226 Difference]: Without dead ends: 4752 [2022-12-14 15:41:14,515 INFO L412 NwaCegarLoop]: 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 [2022-12-14 15:41:14,517 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 791 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 15:41:14,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 2436 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 15:41:14,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4752 states. [2022-12-14 15:41:14,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4752 to 4691. [2022-12-14 15:41:14,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4691 states, 4679 states have (on average 1.3904680487283607) internal successors, (6506), 4690 states have internal predecessors, (6506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 6506 transitions. [2022-12-14 15:41:14,803 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 6506 transitions. Word has length 259 [2022-12-14 15:41:14,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:41:14,804 INFO L495 AbstractCegarLoop]: Abstraction has 4691 states and 6506 transitions. [2022-12-14 15:41:14,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:14,804 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 6506 transitions. [2022-12-14 15:41:14,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-12-14 15:41:14,810 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:41:14,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:41:14,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 15:41:14,810 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:41:14,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:41:14,811 INFO L85 PathProgramCache]: Analyzing trace with hash -16548158, now seen corresponding path program 1 times [2022-12-14 15:41:14,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:41:14,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490472912] [2022-12-14 15:41:14,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:41:14,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:41:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:41:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:41:14,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:41:14,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490472912] [2022-12-14 15:41:14,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490472912] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:41:14,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:41:14,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:41:14,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714581955] [2022-12-14 15:41:14,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:41:14,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:41:14,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:41:14,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:41:14,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:41:14,907 INFO L87 Difference]: Start difference. First operand 4691 states and 6506 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:41:15,623 INFO L93 Difference]: Finished difference Result 13921 states and 19285 transitions. [2022-12-14 15:41:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:41:15,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2022-12-14 15:41:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:41:15,643 INFO L225 Difference]: With dead ends: 13921 [2022-12-14 15:41:15,643 INFO L226 Difference]: Without dead ends: 9362 [2022-12-14 15:41:15,647 INFO L412 NwaCegarLoop]: 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 [2022-12-14 15:41:15,648 INFO L413 NwaCegarLoop]: 1704 mSDtfsCounter, 903 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:41:15,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 2554 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 15:41:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9362 states. [2022-12-14 15:41:16,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9362 to 4694. [2022-12-14 15:41:16,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 4682 states have (on average 1.3902178556172575) internal successors, (6509), 4693 states have internal predecessors, (6509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 6509 transitions. [2022-12-14 15:41:16,083 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 6509 transitions. Word has length 259 [2022-12-14 15:41:16,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:41:16,083 INFO L495 AbstractCegarLoop]: Abstraction has 4694 states and 6509 transitions. [2022-12-14 15:41:16,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:16,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 6509 transitions. [2022-12-14 15:41:16,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-12-14 15:41:16,088 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:41:16,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:41:16,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 15:41:16,089 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:41:16,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:41:16,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1404176822, now seen corresponding path program 1 times [2022-12-14 15:41:16,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:41:16,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038299842] [2022-12-14 15:41:16,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:41:16,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:41:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:41:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:41:17,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:41:17,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038299842] [2022-12-14 15:41:17,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038299842] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:41:17,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:41:17,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 15:41:17,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159574718] [2022-12-14 15:41:17,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:41:17,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 15:41:17,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:41:17,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 15:41:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 15:41:17,414 INFO L87 Difference]: Start difference. First operand 4694 states and 6509 transitions. Second operand has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:41:18,773 INFO L93 Difference]: Finished difference Result 11819 states and 16348 transitions. [2022-12-14 15:41:18,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 15:41:18,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2022-12-14 15:41:18,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:41:18,790 INFO L225 Difference]: With dead ends: 11819 [2022-12-14 15:41:18,790 INFO L226 Difference]: Without dead ends: 8506 [2022-12-14 15:41:18,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 15:41:18,794 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 1352 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 15:41:18,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 3159 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 15:41:18,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8506 states. [2022-12-14 15:41:19,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8506 to 7484. [2022-12-14 15:41:19,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7484 states, 7472 states have (on average 1.3889186295503213) internal successors, (10378), 7483 states have internal predecessors, (10378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7484 states to 7484 states and 10378 transitions. [2022-12-14 15:41:19,297 INFO L78 Accepts]: Start accepts. Automaton has 7484 states and 10378 transitions. Word has length 260 [2022-12-14 15:41:19,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:41:19,298 INFO L495 AbstractCegarLoop]: Abstraction has 7484 states and 10378 transitions. [2022-12-14 15:41:19,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 7484 states and 10378 transitions. [2022-12-14 15:41:19,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-12-14 15:41:19,304 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:41:19,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:41:19,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 15:41:19,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:41:19,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:41:19,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1798442158, now seen corresponding path program 1 times [2022-12-14 15:41:19,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:41:19,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644168696] [2022-12-14 15:41:19,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:41:19,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:41:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:41:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:41:20,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:41:20,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644168696] [2022-12-14 15:41:20,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644168696] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:41:20,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:41:20,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 15:41:20,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887524358] [2022-12-14 15:41:20,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:41:20,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 15:41:20,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:41:20,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 15:41:20,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 15:41:20,431 INFO L87 Difference]: Start difference. First operand 7484 states and 10378 transitions. Second operand has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:41:22,136 INFO L93 Difference]: Finished difference Result 18852 states and 25855 transitions. [2022-12-14 15:41:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 15:41:22,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2022-12-14 15:41:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:41:22,154 INFO L225 Difference]: With dead ends: 18852 [2022-12-14 15:41:22,154 INFO L226 Difference]: Without dead ends: 13429 [2022-12-14 15:41:22,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 15:41:22,161 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 1838 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 2455 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 15:41:22,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1838 Valid, 2455 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 15:41:22,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13429 states. [2022-12-14 15:41:23,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13429 to 11237. [2022-12-14 15:41:23,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11237 states, 11225 states have (on average 1.3711358574610244) internal successors, (15391), 11236 states have internal predecessors, (15391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11237 states to 11237 states and 15391 transitions. [2022-12-14 15:41:23,216 INFO L78 Accepts]: Start accepts. Automaton has 11237 states and 15391 transitions. Word has length 260 [2022-12-14 15:41:23,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:41:23,216 INFO L495 AbstractCegarLoop]: Abstraction has 11237 states and 15391 transitions. [2022-12-14 15:41:23,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:23,217 INFO L276 IsEmpty]: Start isEmpty. Operand 11237 states and 15391 transitions. [2022-12-14 15:41:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-12-14 15:41:23,223 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:41:23,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:41:23,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 15:41:23,224 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:41:23,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:41:23,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1798011182, now seen corresponding path program 1 times [2022-12-14 15:41:23,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:41:23,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914160923] [2022-12-14 15:41:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:41:23,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:41:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:41:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:41:23,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:41:23,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914160923] [2022-12-14 15:41:23,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914160923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:41:23,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:41:23,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:41:23,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966766539] [2022-12-14 15:41:23,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:41:23,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:41:23,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:41:23,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:41:23,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:41:23,627 INFO L87 Difference]: Start difference. First operand 11237 states and 15391 transitions. Second operand has 5 states, 5 states have (on average 52.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:25,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:41:25,497 INFO L93 Difference]: Finished difference Result 29793 states and 40915 transitions. [2022-12-14 15:41:25,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:41:25,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2022-12-14 15:41:25,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:41:25,530 INFO L225 Difference]: With dead ends: 29793 [2022-12-14 15:41:25,530 INFO L226 Difference]: Without dead ends: 18571 [2022-12-14 15:41:25,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:41:25,543 INFO L413 NwaCegarLoop]: 1453 mSDtfsCounter, 2573 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2573 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 15:41:25,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2573 Valid, 2273 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 15:41:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18571 states. [2022-12-14 15:41:26,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18571 to 17933. [2022-12-14 15:41:26,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17933 states, 17921 states have (on average 1.3734724624741923) internal successors, (24614), 17932 states have internal predecessors, (24614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:26,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17933 states to 17933 states and 24614 transitions. [2022-12-14 15:41:26,958 INFO L78 Accepts]: Start accepts. Automaton has 17933 states and 24614 transitions. Word has length 260 [2022-12-14 15:41:26,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:41:26,959 INFO L495 AbstractCegarLoop]: Abstraction has 17933 states and 24614 transitions. [2022-12-14 15:41:26,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 17933 states and 24614 transitions. [2022-12-14 15:41:26,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-12-14 15:41:26,969 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:41:26,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:41:26,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 15:41:26,970 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:41:26,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:41:26,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1781300213, now seen corresponding path program 1 times [2022-12-14 15:41:26,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:41:26,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462222875] [2022-12-14 15:41:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:41:26,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:41:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:41:27,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:41:27,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:41:27,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462222875] [2022-12-14 15:41:27,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462222875] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:41:27,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:41:27,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:41:27,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451842916] [2022-12-14 15:41:27,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:41:27,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:41:27,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:41:27,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:41:27,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:41:27,333 INFO L87 Difference]: Start difference. First operand 17933 states and 24614 transitions. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:30,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:41:30,147 INFO L93 Difference]: Finished difference Result 47560 states and 65390 transitions. [2022-12-14 15:41:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:41:30,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 261 [2022-12-14 15:41:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:41:30,186 INFO L225 Difference]: With dead ends: 47560 [2022-12-14 15:41:30,186 INFO L226 Difference]: Without dead ends: 29765 [2022-12-14 15:41:30,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:41:30,203 INFO L413 NwaCegarLoop]: 1446 mSDtfsCounter, 1925 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:41:30,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1925 Valid, 2270 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 15:41:30,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29765 states. [2022-12-14 15:41:32,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29765 to 28826. [2022-12-14 15:41:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28826 states, 28814 states have (on average 1.3723884222947178) internal successors, (39544), 28825 states have internal predecessors, (39544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28826 states to 28826 states and 39544 transitions. [2022-12-14 15:41:32,910 INFO L78 Accepts]: Start accepts. Automaton has 28826 states and 39544 transitions. Word has length 261 [2022-12-14 15:41:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:41:32,910 INFO L495 AbstractCegarLoop]: Abstraction has 28826 states and 39544 transitions. [2022-12-14 15:41:32,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 28826 states and 39544 transitions. [2022-12-14 15:41:32,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-12-14 15:41:32,932 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:41:32,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:41:32,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 15:41:32,933 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:41:32,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:41:32,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1375949074, now seen corresponding path program 1 times [2022-12-14 15:41:32,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:41:32,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132310715] [2022-12-14 15:41:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:41:32,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:41:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:41:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:41:33,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:41:33,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132310715] [2022-12-14 15:41:33,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132310715] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:41:33,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:41:33,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:41:33,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971901915] [2022-12-14 15:41:33,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:41:33,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:41:33,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:41:33,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:41:33,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:41:33,296 INFO L87 Difference]: Start difference. First operand 28826 states and 39544 transitions. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:38,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:41:38,319 INFO L93 Difference]: Finished difference Result 75814 states and 104060 transitions. [2022-12-14 15:41:38,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:41:38,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2022-12-14 15:41:38,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:41:38,375 INFO L225 Difference]: With dead ends: 75814 [2022-12-14 15:41:38,376 INFO L226 Difference]: Without dead ends: 47130 [2022-12-14 15:41:38,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:41:38,400 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 1902 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1902 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 15:41:38,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1902 Valid, 2229 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 15:41:38,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47130 states. [2022-12-14 15:41:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47130 to 45652. [2022-12-14 15:41:42,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45652 states, 45640 states have (on average 1.3648992112182297) internal successors, (62294), 45651 states have internal predecessors, (62294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:42,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45652 states to 45652 states and 62294 transitions. [2022-12-14 15:41:42,742 INFO L78 Accepts]: Start accepts. Automaton has 45652 states and 62294 transitions. Word has length 263 [2022-12-14 15:41:42,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:41:42,742 INFO L495 AbstractCegarLoop]: Abstraction has 45652 states and 62294 transitions. [2022-12-14 15:41:42,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:42,743 INFO L276 IsEmpty]: Start isEmpty. Operand 45652 states and 62294 transitions. [2022-12-14 15:41:42,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-12-14 15:41:42,771 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:41:42,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:41:42,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 15:41:42,771 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:41:42,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:41:42,772 INFO L85 PathProgramCache]: Analyzing trace with hash 201994070, now seen corresponding path program 1 times [2022-12-14 15:41:42,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:41:42,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153007079] [2022-12-14 15:41:42,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:41:42,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:41:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:41:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:41:42,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:41:42,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153007079] [2022-12-14 15:41:42,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153007079] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:41:42,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:41:42,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:41:42,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276882748] [2022-12-14 15:41:42,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:41:42,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:41:42,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:41:42,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:41:42,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:41:42,868 INFO L87 Difference]: Start difference. First operand 45652 states and 62294 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:50,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:41:50,500 INFO L93 Difference]: Finished difference Result 125579 states and 171230 transitions. [2022-12-14 15:41:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:41:50,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2022-12-14 15:41:50,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:41:50,601 INFO L225 Difference]: With dead ends: 125579 [2022-12-14 15:41:50,601 INFO L226 Difference]: Without dead ends: 81489 [2022-12-14 15:41:50,632 INFO L412 NwaCegarLoop]: 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 [2022-12-14 15:41:50,633 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 775 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:41:50,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 2449 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 15:41:50,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81489 states. [2022-12-14 15:41:58,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81489 to 81327. [2022-12-14 15:41:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81327 states, 81315 states have (on average 1.361679886859743) internal successors, (110725), 81326 states have internal predecessors, (110725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:58,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81327 states to 81327 states and 110725 transitions. [2022-12-14 15:41:58,466 INFO L78 Accepts]: Start accepts. Automaton has 81327 states and 110725 transitions. Word has length 265 [2022-12-14 15:41:58,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:41:58,467 INFO L495 AbstractCegarLoop]: Abstraction has 81327 states and 110725 transitions. [2022-12-14 15:41:58,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:58,467 INFO L276 IsEmpty]: Start isEmpty. Operand 81327 states and 110725 transitions. [2022-12-14 15:41:58,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-12-14 15:41:58,510 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:41:58,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:41:58,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 15:41:58,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:41:58,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:41:58,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1647847163, now seen corresponding path program 1 times [2022-12-14 15:41:58,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:41:58,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85322908] [2022-12-14 15:41:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:41:58,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:41:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:41:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:41:58,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:41:58,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85322908] [2022-12-14 15:41:58,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85322908] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:41:58,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:41:58,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:41:58,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076969265] [2022-12-14 15:41:58,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:41:58,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:41:58,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:41:58,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:41:58,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:41:58,595 INFO L87 Difference]: Start difference. First operand 81327 states and 110725 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:14,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:14,028 INFO L93 Difference]: Finished difference Result 242046 states and 329293 transitions. [2022-12-14 15:42:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:42:14,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2022-12-14 15:42:14,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:14,253 INFO L225 Difference]: With dead ends: 242046 [2022-12-14 15:42:14,254 INFO L226 Difference]: Without dead ends: 162405 [2022-12-14 15:42:14,301 INFO L412 NwaCegarLoop]: 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 [2022-12-14 15:42:14,302 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 879 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:14,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 2533 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 15:42:14,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162405 states. [2022-12-14 15:42:23,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162405 to 81360. [2022-12-14 15:42:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81360 states, 81348 states have (on average 1.3615331661503662) internal successors, (110758), 81359 states have internal predecessors, (110758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:23,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81360 states to 81360 states and 110758 transitions. [2022-12-14 15:42:23,869 INFO L78 Accepts]: Start accepts. Automaton has 81360 states and 110758 transitions. Word has length 265 [2022-12-14 15:42:23,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:23,869 INFO L495 AbstractCegarLoop]: Abstraction has 81360 states and 110758 transitions. [2022-12-14 15:42:23,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:23,870 INFO L276 IsEmpty]: Start isEmpty. Operand 81360 states and 110758 transitions. [2022-12-14 15:42:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-12-14 15:42:23,911 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:23,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:42:23,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 15:42:23,911 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:42:23,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash 929276873, now seen corresponding path program 1 times [2022-12-14 15:42:23,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:42:23,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046510797] [2022-12-14 15:42:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:23,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:42:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:24,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:42:24,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:42:24,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046510797] [2022-12-14 15:42:24,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046510797] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:24,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:24,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:42:24,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771813535] [2022-12-14 15:42:24,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:24,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:42:24,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:42:24,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:42:24,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:42:24,240 INFO L87 Difference]: Start difference. First operand 81360 states and 110758 transitions. Second operand has 5 states, 5 states have (on average 53.2) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:40,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:40,075 INFO L93 Difference]: Finished difference Result 223531 states and 304243 transitions. [2022-12-14 15:42:40,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:42:40,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-12-14 15:42:40,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:40,275 INFO L225 Difference]: With dead ends: 223531 [2022-12-14 15:42:40,275 INFO L226 Difference]: Without dead ends: 142371 [2022-12-14 15:42:40,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:42:40,330 INFO L413 NwaCegarLoop]: 1429 mSDtfsCounter, 2530 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:40,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2530 Valid, 2245 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 15:42:40,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142371 states. [2022-12-14 15:42:56,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142371 to 142229. [2022-12-14 15:42:56,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142229 states, 142217 states have (on average 1.3565044966494864) internal successors, (192918), 142228 states have internal predecessors, (192918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:56,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142229 states to 142229 states and 192918 transitions. [2022-12-14 15:42:56,816 INFO L78 Accepts]: Start accepts. Automaton has 142229 states and 192918 transitions. Word has length 266 [2022-12-14 15:42:56,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:56,816 INFO L495 AbstractCegarLoop]: Abstraction has 142229 states and 192918 transitions. [2022-12-14 15:42:56,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:56,816 INFO L276 IsEmpty]: Start isEmpty. Operand 142229 states and 192918 transitions. [2022-12-14 15:42:56,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-12-14 15:42:56,891 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:56,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:42:56,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 15:42:56,891 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:42:56,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:56,892 INFO L85 PathProgramCache]: Analyzing trace with hash -86571057, now seen corresponding path program 1 times [2022-12-14 15:42:56,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:42:56,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310319895] [2022-12-14 15:42:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:56,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:42:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:57,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:42:57,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:42:57,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310319895] [2022-12-14 15:42:57,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310319895] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:57,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:57,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:42:57,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78647099] [2022-12-14 15:42:57,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:57,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:42:57,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:42:57,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:42:57,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:42:57,245 INFO L87 Difference]: Start difference. First operand 142229 states and 192918 transitions. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:43:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:43:28,190 INFO L93 Difference]: Finished difference Result 393380 states and 533847 transitions. [2022-12-14 15:43:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:43:28,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2022-12-14 15:43:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:43:28,580 INFO L225 Difference]: With dead ends: 393380 [2022-12-14 15:43:28,580 INFO L226 Difference]: Without dead ends: 253415 [2022-12-14 15:43:28,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:43:28,674 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 1920 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1920 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 15:43:28,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1920 Valid, 2241 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 15:43:28,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253415 states. [2022-12-14 15:43:58,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253415 to 253296. [2022-12-14 15:43:58,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253296 states, 253284 states have (on average 1.3543611124271568) internal successors, (343038), 253295 states have internal predecessors, (343038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:43:59,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253296 states to 253296 states and 343038 transitions. [2022-12-14 15:43:59,160 INFO L78 Accepts]: Start accepts. Automaton has 253296 states and 343038 transitions. Word has length 267 [2022-12-14 15:43:59,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:43:59,160 INFO L495 AbstractCegarLoop]: Abstraction has 253296 states and 343038 transitions. [2022-12-14 15:43:59,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:43:59,160 INFO L276 IsEmpty]: Start isEmpty. Operand 253296 states and 343038 transitions. [2022-12-14 15:43:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-12-14 15:43:59,401 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:43:59,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:43:59,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 15:43:59,402 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:43:59,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:43:59,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2063232931, now seen corresponding path program 1 times [2022-12-14 15:43:59,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:43:59,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518552372] [2022-12-14 15:43:59,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:43:59,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:43:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:43:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:43:59,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:43:59,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518552372] [2022-12-14 15:43:59,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518552372] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:43:59,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:43:59,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:43:59,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483575425] [2022-12-14 15:43:59,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:43:59,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:43:59,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:43:59,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:43:59,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:43:59,726 INFO L87 Difference]: Start difference. First operand 253296 states and 343038 transitions. Second operand has 4 states, 4 states have (on average 67.25) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:44:32,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:44:32,739 INFO L93 Difference]: Finished difference Result 523688 states and 708499 transitions. [2022-12-14 15:44:32,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:44:32,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.25) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2022-12-14 15:44:32,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:44:33,164 INFO L225 Difference]: With dead ends: 523688 [2022-12-14 15:44:33,164 INFO L226 Difference]: Without dead ends: 271893 [2022-12-14 15:44:33,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:44:33,301 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 1900 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 15:44:33,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1900 Valid, 2205 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 15:44:33,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271893 states. [2022-12-14 15:45:04,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271893 to 255219. [2022-12-14 15:45:04,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255219 states, 255207 states have (on average 1.35475515953716) internal successors, (345743), 255218 states have internal predecessors, (345743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:45:05,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255219 states to 255219 states and 345743 transitions. [2022-12-14 15:45:05,413 INFO L78 Accepts]: Start accepts. Automaton has 255219 states and 345743 transitions. Word has length 269 [2022-12-14 15:45:05,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:45:05,413 INFO L495 AbstractCegarLoop]: Abstraction has 255219 states and 345743 transitions. [2022-12-14 15:45:05,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.25) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:45:05,413 INFO L276 IsEmpty]: Start isEmpty. Operand 255219 states and 345743 transitions. [2022-12-14 15:45:05,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-12-14 15:45:05,555 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:45:05,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:45:05,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 15:45:05,555 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:45:05,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:45:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash -783185905, now seen corresponding path program 1 times [2022-12-14 15:45:05,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:45:05,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85324617] [2022-12-14 15:45:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:45:05,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:45:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:45:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:45:05,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:45:05,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85324617] [2022-12-14 15:45:05,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85324617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:45:05,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:45:05,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:45:05,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39817296] [2022-12-14 15:45:05,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:45:05,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:45:05,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:45:05,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:45:05,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:45:05,636 INFO L87 Difference]: Start difference. First operand 255219 states and 345743 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:46:10,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:46:10,230 INFO L93 Difference]: Finished difference Result 761793 states and 1031863 transitions. [2022-12-14 15:46:10,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:46:10,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 271 [2022-12-14 15:46:10,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:46:11,187 INFO L225 Difference]: With dead ends: 761793 [2022-12-14 15:46:11,187 INFO L226 Difference]: Without dead ends: 508753 [2022-12-14 15:46:11,401 INFO L412 NwaCegarLoop]: 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 [2022-12-14 15:46:11,402 INFO L413 NwaCegarLoop]: 1662 mSDtfsCounter, 855 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 15:46:11,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 2512 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 15:46:11,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508753 states. [2022-12-14 15:46:50,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508753 to 255443. [2022-12-14 15:46:50,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255443 states, 255431 states have (on average 1.3544440572992316) internal successors, (345967), 255442 states have internal predecessors, (345967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:46:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255443 states to 255443 states and 345967 transitions. [2022-12-14 15:46:50,750 INFO L78 Accepts]: Start accepts. Automaton has 255443 states and 345967 transitions. Word has length 271 [2022-12-14 15:46:50,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:46:50,750 INFO L495 AbstractCegarLoop]: Abstraction has 255443 states and 345967 transitions. [2022-12-14 15:46:50,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:46:50,751 INFO L276 IsEmpty]: Start isEmpty. Operand 255443 states and 345967 transitions. [2022-12-14 15:46:51,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-12-14 15:46:51,027 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:46:51,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:46:51,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 15:46:51,028 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:46:51,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:46:51,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1005827127, now seen corresponding path program 1 times [2022-12-14 15:46:51,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:46:51,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62277380] [2022-12-14 15:46:51,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:46:51,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:46:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:46:51,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:46:51,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:46:51,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62277380] [2022-12-14 15:46:51,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62277380] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:46:51,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:46:51,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:46:51,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300459738] [2022-12-14 15:46:51,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:46:51,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:46:51,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:46:51,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:46:51,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:46:51,351 INFO L87 Difference]: Start difference. First operand 255443 states and 345967 transitions. Second operand has 5 states, 5 states have (on average 54.4) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:47:30,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:47:30,746 INFO L93 Difference]: Finished difference Result 528969 states and 715944 transitions. [2022-12-14 15:47:30,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:47:30,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 54.4) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2022-12-14 15:47:30,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:47:31,179 INFO L225 Difference]: With dead ends: 528969 [2022-12-14 15:47:31,179 INFO L226 Difference]: Without dead ends: 275213 [2022-12-14 15:47:31,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:47:31,332 INFO L413 NwaCegarLoop]: 1410 mSDtfsCounter, 2803 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2803 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 15:47:31,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2803 Valid, 2226 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 15:47:31,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275213 states. [2022-12-14 15:48:09,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275213 to 256791. [2022-12-14 15:48:09,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256791 states, 256779 states have (on average 1.354904411965153) internal successors, (347911), 256790 states have internal predecessors, (347911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:48:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256791 states to 256791 states and 347911 transitions. [2022-12-14 15:48:10,468 INFO L78 Accepts]: Start accepts. Automaton has 256791 states and 347911 transitions. Word has length 272 [2022-12-14 15:48:10,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:48:10,468 INFO L495 AbstractCegarLoop]: Abstraction has 256791 states and 347911 transitions. [2022-12-14 15:48:10,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.4) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:48:10,468 INFO L276 IsEmpty]: Start isEmpty. Operand 256791 states and 347911 transitions. [2022-12-14 15:48:10,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-12-14 15:48:10,609 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:48:10,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:48:10,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 15:48:10,610 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:48:10,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:48:10,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1049075694, now seen corresponding path program 1 times [2022-12-14 15:48:10,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:48:10,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244362186] [2022-12-14 15:48:10,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:48:10,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:48:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:48:11,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:48:11,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:48:11,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244362186] [2022-12-14 15:48:11,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244362186] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:48:11,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:48:11,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:48:11,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29699894] [2022-12-14 15:48:11,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:48:11,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:48:11,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:48:11,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:48:11,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:48:11,022 INFO L87 Difference]: Start difference. First operand 256791 states and 347911 transitions. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:49:17,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:49:17,165 INFO L93 Difference]: Finished difference Result 634820 states and 860614 transitions. [2022-12-14 15:49:17,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:49:17,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2022-12-14 15:49:17,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:49:18,054 INFO L225 Difference]: With dead ends: 634820 [2022-12-14 15:49:18,054 INFO L226 Difference]: Without dead ends: 429006 [2022-12-14 15:49:18,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:49:18,216 INFO L413 NwaCegarLoop]: 1369 mSDtfsCounter, 1888 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 15:49:18,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 2193 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 15:49:18,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429006 states. [2022-12-14 15:50:29,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429006 to 428906. [2022-12-14 15:50:30,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428906 states, 428894 states have (on average 1.3468106338629124) internal successors, (577639), 428905 states have internal predecessors, (577639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:50:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428906 states to 428906 states and 577639 transitions. [2022-12-14 15:50:31,045 INFO L78 Accepts]: Start accepts. Automaton has 428906 states and 577639 transitions. Word has length 273 [2022-12-14 15:50:31,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:50:31,046 INFO L495 AbstractCegarLoop]: Abstraction has 428906 states and 577639 transitions. [2022-12-14 15:50:31,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:50:31,046 INFO L276 IsEmpty]: Start isEmpty. Operand 428906 states and 577639 transitions. [2022-12-14 15:50:31,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-12-14 15:50:31,449 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:50:31,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:50:31,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 15:50:31,449 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-12-14 15:50:31,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:50:31,449 INFO L85 PathProgramCache]: Analyzing trace with hash 392081069, now seen corresponding path program 1 times [2022-12-14 15:50:31,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:50:31,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974814979] [2022-12-14 15:50:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:50:31,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:50:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:50:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:50:31,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:50:31,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974814979] [2022-12-14 15:50:31,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974814979] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:50:31,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:50:31,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:50:31,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82322871] [2022-12-14 15:50:31,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:50:31,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:50:31,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:50:31,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:50:31,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:50:31,759 INFO L87 Difference]: Start difference. First operand 428906 states and 577639 transitions. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:52:33,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:52:33,245 INFO L93 Difference]: Finished difference Result 1141085 states and 1533355 transitions. [2022-12-14 15:52:33,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:52:33,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 275 [2022-12-14 15:52:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:52:34,618 INFO L225 Difference]: With dead ends: 1141085 [2022-12-14 15:52:34,618 INFO L226 Difference]: Without dead ends: 719696 [2022-12-14 15:52:35,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:52:35,155 INFO L413 NwaCegarLoop]: 1251 mSDtfsCounter, 1982 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 15:52:35,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1982 Valid, 2067 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 15:52:35,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719696 states.